Originally published on ProWrestlingSheet.

Former WWE Diva Melina Perez's recent split with Lucha Underground was NOT due to an attitude issue ... Pro Wrestling Sheet has learned she only signed up for a one-time appearance.

Lucha Underground sources tell us producers attempted to lock Melina down to a long term deal before Ultima Lucha last season, but she would only sign on for the finale.

Both parties agreed to leave the door open for S2 ... but once storylines were in place, producers had decided to go in a different direction than they had initially planned with Johnny Mundo.

We're told producers attempted to involve Melina, but the two sides couldn't come to an agreement. Our sources say reports claiming she was "replaced" by Taya Valkyrie for being difficult to work with, however, are just not true -- despite her reputation leading people to believe otherwise.

Melina refuted the same reports on Twitter last night, claiming producers said they didn't want to pair her with Johnny Mundo -- aka John Morrison -- because it was already done in WWE.

According to our sources, she's telling the truth.