Pencil and paper is the only way to go I can see. I saw a free Z9 Excel file that listed everything in the past couple of weeks…think it was posted here. That would make things a bit easier to manage but if you really want to merge the settings without writing anything down…then decide which body is closest to 'right' and sit down with both bodies set to never time out into standby (temporarily) or even better a second person (wife, kid, SO, whatever) on the 'less right' body and then go manually through each setting and each bank in an organized manner and put the settings you want from the 'less right' one into the 'more right one'. Then save to card and move that card to the 'less right' body for Load settings…then put 'less right' body's card back in and Save to it's card. And yeah…save a copy on your computer as well…I have a whole folder that lives on DropBox named Settings files, inside is a folder for each body we have, and inside there are folders with names like Factory, FW 2.1, 20220105 and 20220815 (with the binary files inside there so I can find the right one by date or firmware or whatever.