Adding a further part to an existing Arrangement

[JohnFClarke]

I realise it would sometimes be helpful to supply A-clarinet parts in addition to the Bb-clarinet parts I have already supplied.
I can see how to create a new arrangement and add parts to it.
And how to replace and existing part I have already supplied.
But I can't see how I can take an existing arrangement and add fresh parts to it.

[coulonnus]

Compare Arrangements and transcriptions in https://imslp.org/wiki/12_Full_Organ_Pi ... ,_William) and its 2019/5/28 situation https://imslp.org/index.php?title=12_Fu ... id=2867493. If I well understand your problem edit both pages, compare the fields between {{#fte:imslpfile and }} and make the corresponding modification into your page after you have uploaded the fresh parts as new arrangements. (were the 2 Alternate parts for me)

[coulonnus]

I think this is a similar situation: https://imslpforums.org/viewtopic.php?t=9616