Deironing GIM - What Happens to group storage?

I'm the only person left in my GIM group. I had stopped playing for like six months and my groupies gradually disbanded, now I'm the only one left. I think I'd like to deiron and maybe even start playing again. There's still stuff in our group storage though. If I disband the group, do the items there get deleted? Or can I still withdraw them after I formally leave the group and become a normie?

Edit: I had to clear my own bank out some but I removed everything from the group bank in the end. I'm gonna go deiron now.