The Disappearing Palm Trees

The title is just one issues when I have taken Tropicraft out of my minecraft.jar and put it back in (For using other mods and such) Others include any Tropicraft items in chests disappear, coconuts reaming floating even when palm trees disappear, and I have no idea how it affects structures built with Tropicraft blocks (I assume they disappear as well). Keep in mind all this stuff is gone AFTER I re-install Tropicraft. Now the Tropicraft file is in the mods folder under .minecraft, so I'm not sure if these problems would occur again if I removed it to use another mod or something. The reason I'm complaining is because I want to start a new world with vanilla minecraft, but my tropical world will lose all of it's palm trees and items and such. Is there anyway that this can be fixed in a future update?

Are you going back into your tropicraft world after you have uninstalled tropicraft?

Yes I did

Okay. If you want to keep the stuff from tropicraft, you have to have tropicraft installed. You can't uninstall the mod, and go back into that world. What happens is that the game loads the world, and there is information there, but there isn't anything to tie it to, so Minecraft ends up deleting it.

Ahhh I see, thank you!