With Rob's help I have sorted the ADIF issue (strange glitch) and now successfully loaded my SOTA records into Log4OM. Currently the SOTA Ref is in the Comment field as you suggested and is displaying OK in Log4OM. So do I now need to run the Merge to move the SOTA Ref to the correct field? I think that is what you are saying.
It is a pity that the SOTA MT didn't cooperate with you, I noticed your previous communication on the SOTA Reflector


Thanks for your help, much appreciated.
73 Andrew G4AFI