Baz Engineer

I abandoned land by mistake, why wont it let me buy it back without putting my tier fee up? Long explanaition: I bough a couple of parcels of abandoned land in a sim, but the day after it I got word that a friend of a friend want's to sell their region to me, so i abandoned the parcels i bought and realised that i have to wait for up to 24 hours for it to be reclaimed by LL. So i deced to take it back, which apparently i can do because the land hasnt been reclaimed yet. Problem is, when i try to buy it back, the system is still registering that my group still owns the land, but it wont let me buy for group, and when i try to buy it for myself it wants to add another half region to my tier fees. Any help would be appreciated. Thanks