There is a known bug with diagrams entered with incorrect FEN strings (missing some data). They will load fine on the old site but due to the missing options, the current site doesn't handle them correctly. Have no idea what the status is of a fix though.
There is a known bug with diagrams entered with incorrect FEN strings (missing some data). They will load fine on the old site but due to the missing options, the current site doesn't handle them correctly. Have no idea what the status is of a fix though.