Working on a morphological search today, I found that while it is possible to use ANDEQUALS with lemmas, I could not use it with morphological criteria.
So "lemma:λογος ANDEQUALS surface:word" will return hits every time the greek lemma logos matches the surface text "word" (for example, in the ESV).
However, "lemma:λογος@N ANDEQUALS surface:word" or "@N ANDEQUALS surface:word" will not work.
Is there a reason for this, or is it a bug?