Yup, that's the one, with the pulldown for 'Store Position'. Hmmm...not sure why it's not working for you.

I can send you one of my ALive missions and you can take it apart to see the files I have and test the persistence. I noticed that I have some settings in my description.ext that triggers the sqf files.

Anyhow let me know I'll shoot a campaign over. One that me and a few buddies have been 'testing' for the past 30-days or so has no issues with persistence, and I think about 4 in-game campaign days where we save progress where ever we happen to be on the map.

I found the reason for this bug. ill write up a guide on steam page as many many days of tinkering i find the perfect way to force load everything as if the game never stopped.