HL file upload restrictions

[DeltaMasterMind]

Hello,
I am inquiring about why Lonewolf has chosen to block upload of HeroLab HLexport files? I am currently curious because for those with Ipads and the like, installing the user file can be tricky and I do use dropbox for support there. Since I don't have a way to do future updates via the update window yet I have been posting .user files to my thread in the Pathfinder forum and wanted to have the HL file uploaded next to them. I just recently decided to start adding in the HL file because of the trouble I have seen with a friend and his Ipad. I don't mean to waste your time, but I didn't find any information on exactly why HL files are not allowed. Thank you for your time.