make sure the generated ID does not ever look like something the serv…

…er would return

src/spine.coffee

@@ -350,7 +350,7 @@ class Model extends Module
 
   create: (options) ->
     @trigger('beforeCreate', options)
-    @id          = @constructor.uid() unless @id
+    @id          = @cid unless @id
 
     record       = @dup(false)
     @constructor.records[@id]   = record