There is a function in the relationship page, if "Credited as" field used "Change credits for other Stefan Kapitzke relationships on the page." checkbox appears, which is very handy.

Would be great to have the same function for changing Instruments, for example I need to change "viaola" to "violin" for each recording for each artist individually.

But it should change only the same credits that user changes, in this example only in the field Instrument, only from viaola "viaola" to "violin", not all credits on page

Also for changing "additional" "assistant" "associate" "co" check boxes.