Kerbal tourists disappearing

[Jimbodiah]

I often run a bunch of tourist contracts, having 3-4 ships en-route and thus switching from one ship to the other to make landings/burns etc. Since starting a new career in 1.2 I have my kerbals go missing on their way home after I switch between ships. They do not show up as missing/dead and are no longer in the ships they left in, meaning I can't finish the contracts and have to delete them.

Has anyone else had this issue? Is there anywhere I can see how they disappear?

[Donziboy2]

I have had this multiple times now, sadly its a modded save, I even tried to find where they vanished in the logs to no avail.   Now I just checked after just coming back to playing from a 1 month leave( I quit over constantly loosing crew/tourists) and one of my ships is missing it 20+ kerbals and I dont have any close saves.