Trade slave logging off and not logging back on

I found my Leviathan+ trading slave having disappeared from the game and also from the possessions list when logging on today.
The Starsonata website interface still listed it correctly as one of my slaves however, and when I logged to an alt, the slave suddenly appeared running on its trade route. Logging back to that first character seems to have fixed the issue for now, but the slave was really gone during my offline time and the first login as it did'nt perform any trades.
Logging out for some time did not bring this problem up again so far.

frightening!, no wonder bases everywhere are running out of rations

hmm might have a different reason
my proddy runs out of rats every 4-5 days and when i look it always have 50k rats 1 ExE loads space out base running rats only for that with a slave that can transport it all