Unable to copy a step from one test script to another

In RQM 2.0.1 iFix 5, sometimes when I open up two separate test scripts and attempt to copy and paste from one script to another, RQM will not allow me to do this. When I select a step from what I would call my 'source' test script, the step (either Description or Expected Results column) becomes blank on the screen. If I then select the other column, it becomes blank and my previous cell now shows its text once again. The end result is, I cannot copy from one script to another. The only thing I know to do is to read the step I want to copy and then type a few words at a time in the new step. Read and type, read and type. Please help, Rational!!!! You can do better than this (at least I hope so).