So people seem to be having a hard time gripping the concepts of what dimensions are banned, are usable and get reset this is the list explaining all of it for all the servers.
Overworld: Normal world - doesn't get reset
Nether: Mining Dimension - gets reset
End: Mining Dimension - gets reset
Mining Dimensions: Mining Dimension - gets reset
Aroma's Mining Dimension - Mining Dimension - gets reset
Simple Void Dimension - Banned
Deep Dark: Mining Dimension - gets reset
RFTools Dimensions: Banned unless you have bought one
Twilight Forest: Mining Dimension - gets reset
Last Millenium: Only used for Draconic Reactors
Thaumcraft Dimensions: Available
Runic Dungeons Dimensions: Available
Witchery Dimensions: Available
These go for all the servers same rules for each of them. This is it no ifs not buts this is final.
If there are any I have missed comment them below and I will add them to the list with the appropriate response