diff --git a/couchrest.gemspec b/couchrest.gemspec
index a957edb..b290b73 100644
--- a/couchrest.gemspec
+++ b/couchrest.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
     current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION
     s.specification_version = 2
 
-    if Gem::Version.new(Gem::RubyGemsVersion) >= Gem::Version.new('1.2.0') then
+    if current_version >= 3 then
       s.add_runtime_dependency(%q<json>, [">= 1.1.2"])
       s.add_runtime_dependency(%q<rest-client>, [">= 0.5"])
       s.add_runtime_dependency(%q<mime-types>, [">= 1.15"])
diff --git a/lib/couchrest.rb b/lib/couchrest.rb
index d20771d..df5a447 100644
--- a/lib/couchrest.rb
+++ b/lib/couchrest.rb
@@ -40,6 +40,7 @@ module CouchRest
   autoload :Pager,        'couchrest/helper/pager'
   autoload :FileManager,  'couchrest/helper/file_manager'
   autoload :Streamer,     'couchrest/helper/streamer'
+  autoload :Upgrade,      'couchrest/helper/upgrade'
   
   autoload :ExtendedDocument,     'couchrest/more/extended_document'
   autoload :CastedModel,          'couchrest/more/casted_model'
diff --git a/lib/couchrest/core/database.rb b/lib/couchrest/core/database.rb
index f7bbfcc..82fba7d 100644
--- a/lib/couchrest/core/database.rb
+++ b/lib/couchrest/core/database.rb
@@ -77,13 +77,15 @@ module CouchRest
     end
     
     # GET a document from CouchDB, by id. Returns a Ruby Hash.
-    def get(id)
+    def get(id, params = {})
       slug = escape_docid(id)
-      hash = CouchRest.get("#{@uri}/#{slug}")
-      doc = if /^_design/ =~ hash["_id"]
-        Design.new(hash)
+      url = CouchRest.paramify_url("#{@uri}/#{slug}", params)
+      result = CouchRest.get(url)
+      return result unless result.is_a?(Hash)
+      doc = if /^_design/ =~ result["_id"]
+        Design.new(result)
       else
-        Document.new(hash)
+        Document.new(result)
       end
       doc.database = self
       doc
diff --git a/lib/couchrest/helper/upgrade.rb b/lib/couchrest/helper/upgrade.rb
new file mode 100644
index 0000000..3f8126f
--- /dev/null
+++ b/lib/couchrest/helper/upgrade.rb
@@ -0,0 +1,51 @@
+module CouchRest
+  class Upgrade
+    attr_accessor :olddb, :newdb, :dbname
+    def initialize dbname, old_couch, new_couch
+      @dbname = dbname
+      @olddb = old_couch.database dbname
+      @newdb = new_couch.database!(dbname)
+      @bulk_docs = []
+    end
+    def clone!
+      puts "#{dbname} - #{olddb.info['doc_count']} docs"
+      streamer  = CouchRest::Streamer.new(olddb)
+      streamer.view("_all_docs_by_seq") do |row|
+        load_row_docs(row) if row
+        maybe_flush_bulks
+      end
+      flush_bulks!
+    end
+    
+    private
+    
+    def maybe_flush_bulks
+      flush_bulks! if (@bulk_docs.length > 99)
+    end
+    
+    def flush_bulks!
+      url = CouchRest.paramify_url "#{@newdb.uri}/_bulk_docs", {:all_or_nothing => true}
+      puts "posting #{@bulk_docs.length} bulk docs to #{url}"
+      begin
+        CouchRest.post url, {:docs => @bulk_docs}      
+        @bulk_docs = []
+      rescue Exception => e
+        puts e.response
+        raise e
+      end
+    end
+    
+    def load_row_docs(row)
+      results = @olddb.get(row["id"], {:open_revs => "all", :attachments => true})
+      results.select{|r|r["ok"]}.each do |r|
+        doc = r["ok"]
+        if /^_/.match(doc["_id"]) && !/^_design/.match(doc["_id"])
+          puts "invalid docid #{doc["_id"]} -- trimming"
+          doc["_id"] = doc["_id"].sub('_','')
+        end
+        doc.delete('_rev')
+        @bulk_docs << doc
+      end
+    end
+  end
+end
diff --git a/lib/couchrest/more/extended_document.rb b/lib/couchrest/more/extended_document.rb
index 826b286..acb6b83 100644
--- a/lib/couchrest/more/extended_document.rb
+++ b/lib/couchrest/more/extended_document.rb
@@ -205,8 +205,8 @@ module CouchRest
         _run_destroy_callbacks do
           result = database.delete_doc(self, bulk)
           if result['ok']
-            self['_rev'] = nil
-            self['_id'] = nil
+            self.delete('_rev')
+            self.delete('_id')
           end
           result['ok']
         end
diff --git a/spec/couchrest/core/database_spec.rb b/spec/couchrest/core/database_spec.rb
index dd8c3df..e7f03cc 100644
--- a/spec/couchrest/core/database_spec.rb
+++ b/spec/couchrest/core/database_spec.rb
@@ -149,8 +149,8 @@ describe CouchRest::Database do
           {"mild" => "yet local"},
           {"another" => ["set","of","keys"]}
         ])
-      rs['new_revs'].each do |r|
-        @db.get(r['id'])
+      rs.each do |r|
+        @db.get(r['id']).rev.should == r["rev"]
       end
     end
     
@@ -170,26 +170,10 @@ describe CouchRest::Database do
           {"_id" => "twoB", "mild" => "yet local"},
           {"another" => ["set","of","keys"]}
         ])
-      rs['new_revs'].each do |r|
-        @db.get(r['id'])
+      rs.each do |r|
+        @db.get(r['id']).rev.should == r["rev"]
       end
     end
-    
-    it "in the case of an id conflict should not insert anything" do
-      @r = @db.save_doc({'lemons' => 'from texas', 'and' => 'how', "_id" => "oneB"})
-      
-      lambda do
-      rs = @db.bulk_save([
-          {"_id" => "oneB", "wild" => "and random"},
-          {"_id" => "twoB", "mild" => "yet local"},
-          {"another" => ["set","of","keys"]}
-        ])
-      end.should raise_error(RestClient::RequestFailed)
-    
-      lambda do
-        @db.get('twoB')
-      end.should raise_error(RestClient::ResourceNotFound)
-    end
 
     it "should empty the bulk save cache if no documents are given" do
       @db.save_doc({"_id" => "bulk_cache_1", "val" => "test"}, true)
@@ -593,7 +577,8 @@ describe CouchRest::Database do
         @db.save_doc({'_id' => @docid, 'will-exist' => 'here'})
       end
       it "should fail without a rev" do
-        lambda{@db.move_doc @doc, @docid}.should raise_error(RestClient::RequestFailed)
+        @doc.delete("_rev")
+        lambda{@db.move_doc @doc, @docid}.should raise_error(ArgumentError)
         lambda{@db.get(@r['id'])}.should_not raise_error
       end
       it "should succeed with a rev" do
diff --git a/spec/couchrest/core/document_spec.rb b/spec/couchrest/core/document_spec.rb
index dfb2ab9..da76714 100644
--- a/spec/couchrest/core/document_spec.rb
+++ b/spec/couchrest/core/document_spec.rb
@@ -224,7 +224,8 @@ describe CouchRest::Document do
         @db.save_doc({'_id' => @docid, 'will-exist' => 'here'})
       end
       it "should fail without a rev" do
-        lambda{@doc.move @docid}.should raise_error(RestClient::RequestFailed)
+        @doc.delete("_rev")
+        lambda{@doc.move @docid}.should raise_error(ArgumentError)
         lambda{@db.get(@resp['id'])}.should_not raise_error
       end
       it "should succeed with a rev" do
diff --git a/spec/couchrest/more/casted_model_spec.rb b/spec/couchrest/more/casted_model_spec.rb
index 880e0ee..a2b9216 100644
--- a/spec/couchrest/more/casted_model_spec.rb
+++ b/spec/couchrest/more/casted_model_spec.rb
@@ -70,6 +70,7 @@ describe CouchRest::CastedModel do
   
   describe "saved document with casted models" do
     before(:each) do
+      reset_test_db!
       @obj = DummyModel.new(:casted_attribute => {:name => 'whatever'})
       @obj.save.should be_true
       @obj = DummyModel.get(@obj.id)
@@ -94,4 +95,4 @@ describe CouchRest::CastedModel do
     
   end
   
-end
\ No newline at end of file
+end
diff --git a/spec/couchrest/more/extended_doc_attachment_spec.rb b/spec/couchrest/more/extended_doc_attachment_spec.rb
index c75fc0c..a0213a6 100644
--- a/spec/couchrest/more/extended_doc_attachment_spec.rb
+++ b/spec/couchrest/more/extended_doc_attachment_spec.rb
@@ -4,6 +4,7 @@ describe "ExtendedDocument attachments" do
   
   describe "#has_attachment?" do
     before(:each) do
+      reset_test_db!
       @obj = Basic.new
       @obj.save.should == true
       @file = File.open(FIXTURE_PATH + '/attachments/test.html')
@@ -126,4 +127,4 @@ describe "ExtendedDocument attachments" do
       @obj.attachment_url(@attachment_name).should == "#{Basic.database}/#{@obj.id}/#{@attachment_name}"
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/couchrest/more/extended_doc_spec.rb b/spec/couchrest/more/extended_doc_spec.rb
index f36394a..190baba 100644
--- a/spec/couchrest/more/extended_doc_spec.rb
+++ b/spec/couchrest/more/extended_doc_spec.rb
@@ -442,7 +442,7 @@ describe "ExtendedDocument" do
       @dobj.destroy
       @dobj.rev.should be_nil
       @dobj.id.should be_nil
-      @dobj.save.should == true
+      @dobj.save.should == true 
     end
     it "should make it go away" do
       @dobj.destroy
diff --git a/spec/couchrest/more/extended_doc_view_spec.rb b/spec/couchrest/more/extended_doc_view_spec.rb
index 9045021..4a3e6ee 100644
--- a/spec/couchrest/more/extended_doc_view_spec.rb
+++ b/spec/couchrest/more/extended_doc_view_spec.rb
@@ -190,6 +190,7 @@ describe "ExtendedDocument views" do
 
   describe "with a lot of designs left around" do
     before(:each) do
+      reset_test_db!
       Article.by_date
       Article.view_by :field
       Article.by_field
@@ -203,4 +204,4 @@ describe "ExtendedDocument views" do
       ddocs["rows"].length.should == 1
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/couchrest/more/property_spec.rb b/spec/couchrest/more/property_spec.rb
index ec81d50..723c9ac 100644
--- a/spec/couchrest/more/property_spec.rb
+++ b/spec/couchrest/more/property_spec.rb
@@ -8,6 +8,7 @@ require File.join(FIXTURE_PATH, 'more', 'event')
 describe "ExtendedDocument properties" do
   
   before(:each) do
+    reset_test_db!
     @card = Card.new(:first_name => "matt")
   end
   
@@ -126,4 +127,4 @@ describe "ExtendedDocument properties" do
     end
   end
   
-end
\ No newline at end of file
+end