Livio, many thanks for attacking this duplicates problem around Diederich Pies zu Uedem (the 3rd).
This originated unfortunately in someone trying to claim an unsourced relationship of his wife Elizabeth to a noble family (through the usual "illegimate" child trick. After changing such edits back to the original state (avoiding such unsourced connections) a couple of times I resorted to make the profiles private.
So that person started to build duplicates and tried with every profile manager to request that they are managed and he could get access again to change it back to the unsourced claim.
So thank you for solving this mess and even taking a try at it.
Grazie tanto!