Hi Ofihombre, thanks, it's good to hear from you! Yes, unfortunately the migration can take a while depending on the size of the maps as there is a lot of data to process and rebuild. If it continues to get stuck, one thing that may be helpful is to remove any *.rpgiab files in your intermediate export folder (the one with the game.export file) that have already been processed by the the import tool, and then import the project again. For example, if it's already processed the "test.map" successfully, you can remove "test.rpgiab" from the "maps" folder and then run it again.
Never mind, in ways, the process has ended successfully at all costs and will serve as a warning to the other developers, but after the import, it have already removed the skyboxes, the dialogues and the battles, the skyboxes & dialogues I can put them back again, but the battles no, and it does not work well in Windows 7, and it's more viable to continue developing the project it in Windows 10.