Frankly, I’m not technically knowledgeable to respond to this. It is more that programs/programmers are having problems, not necessarily weavers. WIF uses an obsolete format that went out with Windows 3.1. It’s difficult for some programs to read WIF files developed in a different program. Etc.
It has long been recommended that we save files in the native format of the program we are using.
I’m doing better, but I still have a ton of files to re-save.