Resizing of Source Files

I had a very large source .PSD file that I learned Character Animator would have trouble keeping up with--after I had completed all my rigging. I tried to resize my source file but this broke all the rigging (makes sense since the size of the puppet changed). Unfortunately the only way for me to fix it was to resize the source .PSD and create a new puppet and rig all over again. Fortunately I was able to use the previous build as reference, but it would have been nice to have some kind of option to create a smaller file size while retaining the work I had done. (Yes, I know you can scale the puppet in size but that's not the same as actually reducing the file size of the source file.)