It appears to be lost, the same happened to me and the company. We sailed into M7 crashed and unable to return for 2 days, now the only option was to remake a new character.
Update:
We just returned to N7 after being away 2days due to the bug, and find we have lost everything to another company on the island
Running around the island we can see the same company with 26 different flags, so whether or not they just went around claiming everyone else's land i don't know but our 3 big houses, storage sheds, pens, sloop, brig all sitting there under the there company name.
I have no desire to play this again until a complete rehaul of the territory system is in place along with a server wipe.