I need workarounds for the Duplicated Players Bug

Like everyone knows here, the game is with a Chronical bug that make impossible to transfer players associated with Classics XI Teams and extremely annoying to transfer players associated from the New Added National Teams too

Like we know, EA says that they're aware and looking for a fix, but they won't fix it even for the 27

Sooooo, Let's find a workaround for at least transferring players from Classic XI squads without duplicating or creating useless Siamese twins that broke squad edits