The AD has been superseded: Is the related AMOC still valid?
The supersedure of an AD always and automatically invalidates any AMOC related to that AD.
Even though the technical solution as specified in an AMOC may still be acceptable for compliance with the new AD, this acceptability must be confirmed. To achieve this, the AMOC approval holder (if that organisation wishes to remain the responsible approval holder) would need to apply for an AMOC to EASA, using FO.CAP.00042.
There is no (other) process in existence to 'transfer' an AMOC approval from one AD to another.