I have found a way to convert FULL to RELATIVE using XRP2004.lsp but not the other way round. Main reason I want to do this is to change the Relative to Full, move the drawing and then revert them back to Relative. If any of you know how this may be done another way I am all ears!
Solved! Go to Solution.
Autodesk Reference Manager works for changing relative path to full path.
Win 7 location
Start>All Programs>AutoDesk>AutoCad version XXX>Reference Manager