http://bugs.winehq.org/show_bug.cgi?id=21245
--- Comment #21 from denis bonnenfant denis.bonnenfant@diderot.org 2010-11-10 08:32:11 CST --- Another issue related to this bug, files are growing every time they are saved. For example, a simple assembly containing 3 parts : saved the first time : 1.5 Mb, and after 3 or 4 savings : 13.5 Mb ! saving time is growing exponentially too...
For part files, the problem is less important, but still significant.
Interestingly, opening/saving on windows shrinks the file a little bit.