Supegroup base bug

Our SG-base Chainfire on Deviant has been bugged for a few months now, all our stuff in it is gone, wich just leave us with a tiny entrance-room.
Back when the SG-bases were a problem, we were told that we shouldn't rebuild it, because it would be fixed.
Is this still the case?

Or will we just cut our losses, with all our missing salvage, inspirations, inventions, enchantments and so on, and rebuild it?

I vaguely remember this being a problem for some folks when i13 went live.
Most folks resolved it through customer service after a couple patches.
One of the things that seemed to trigger the issue was too many items in the base. I believe there is now an item cap of 12,000 items for a base.
I don't know if you can resolve this now that we are well into i15, but it might be worth a try.