Ready don't save the right resource for my rest url

I have a testcase with several teststeps, all pointing to same endpoint but different Resource. 

So lets say I have teststep 1:

 endpoint Https:// XXXX resource 1A

Teststep 2

 endpoint Https:// XXXX resource 1B

etc

When I close ReadyAPI and start again the Teststep 2 gets the Resource 1A. Thats the first in the list. Not 1B that it had before I closed down the software.

When I change to resource 1B again I see the changes in properties, down at the left side.

But it don't stay there. Very annoying.