Users searching for xob to mtp conversion are actually looking for a way to decompile EasyBuilder 8000 XOB files back to the original .mpt project, something that should be actually doable.
According to the help files, this can be done using EasyBuilder 8000 using the Tool / Decompile function found in the program upon which you can edit the newly made .mtp files like usual.
Updated: October 11, 2023