Please bring back WA Glider . this FN variant is bad idea (IMHO)

I created the island yesterday, saved it in the process, everything was fine. Today I decided to continue the creation. I can upload the island, but I can't save it. What am I doing wrong?

I have a feeling Worlds Adrift's Island Creator had a water feature, or am I mistaken?

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I LOVED building in Worlds Adrift and am SOO happy to be doing it again. But I remember there being a way to link build objects together to create set pieces, structures and whatnot. And for the life of me I cant remember how or find a tutorial on youtube. PLEASE, if you remember the keys to link objects PLEASE share with me!...