I have a custom post type with custom fields, created with ACF. I downloaded export file of this post type and it worked well. (Had to adjust fields but that was easy and clear.) Then I added more entries to file (keeping same structure) and imported it. On import steprs it showed correct info, but the process ended in totally empty posts. Not even title field was imported. Perhaps there had to be done field mapping but that part is totally unclier (e.g. how to do that, how fields shall be named etc.). So I tried to do some mapping but without any success.
