It's hard to say without seeing the design, but select all and then go to Object>ungroup. Each color should then appear in a layer. Close the eyes on the layers you don't want to cut. (they will disappear from the screen until you open the eyes again.) You can also move the parts around once you ungroup.
I read the forums to learn of what problems there can be...and I have to say Gigi that you are so helpful and fabby with everyone...the forum is lucky to have you and Penny Ducan on hand for guidance.....many thanks to you and of course everyone who offers their advice....regards from Scotland