Question about 0.2.11 and 9.1 maps

[Keiro]

I got a complete cutom server 0.3.6 , 8.54 , and i was wondering what happens if i change it to 0.2.11 , possible? i mean.....map will work? or not /the server is not runing, not hosted)

 

[Korrex]

Nothing I believe. Unless some items were removed during the change between 8.54 to 9.1.