That work-around is a routine part of the process, tried and true. I use it every time, along with muttering a little curse - for ~5+ years…
Oh, and let’s not forget the fact that Image Mapper loses the image when saving a modified GH script that was created by someone else. Meaning always when changing models written by others on this forum.
P.S. One more grievance to add to the list: Data Dam leaks and passes data once when a GH file is opened!