Board Thread:Questions and Answers/@comment-109.155.233.85-20121230192828/@comment-65.95.137.234-20130502041653

This is because Tekkit Classic uses an outdated version of minecraft that on SSP is not capable of keeping the Nether, End, or Overworld loaded when you aren't in them even with anchors. Do to this sometimes the inventories don't travel with them. In some other cases (also applicable to SMP) because the way the games saves dimensions as seperate files it forgets to syncronize the chests.