Same issue here, could be related to wp 5.3? I’ve put a support request in to iThemes and waiting to hear back. Please let me know if you find a solution in the meantime.
DB option did work, I got mixed up between a live and local DB environment. That said, the option to determine this relational value while converting would be a nice add-in 😉
Could I get that plugin please, trying to do the same thing!
