Wyrn

I have a problem that I'm facing. Lets say you have a Modded server with AE2 or any other mod. Lets say you place a AE2 Block like you make a whole network. Then one day you decide to remove AE2 from your mods folder. You play the game and your blocks are gone. Then one day you want to add AE2 back but your blocks are gone forever. I need a mod that saves blocks and their block data even though its been removed. I have a server that oscillates from Modded to Vanilla every other day. And it's crucial to save modded block data. This also would apply for entities and items. Yeah that's basically it I don't know how easy it is to make a mod like that. Where the block/item/entitiy data doesnt get remove but thats currently what i need. Also if possible maybe create a temporary block replacement there until the mod has been added back.