Replacing only when field actually has a value

Support
1

Hi I have a question and haven't been able to find an answer in the forums so far.

I use the FORMAT VALUE function to fill BAND with the value of the ARTIST field. However, sometimes ARTIST is blank while BAND is filled. If I execute the replace commando I end up with an empty BAND field.

So my question: How can I let mp3tag replace BAND with ARTIST only when ARTIST actually has a value?

2

I would always apply a filter first and check whether the action will hit the right files.
So a filter to find all the tracks with empty artists:
%band% IS "" AND %artist% NOT IS ""

Alternatively you could sort first the %band% column and then the %artist% column which should group all similar files togehter.
Then select them and start your action.

3

Create an action like the following. This will either overwrite BAND with ARTIST if ARTIST exists, or keep the old value unchanged if ARTIST does not.

Action type: Format value
Field: BAND
Format string: $if2(%artist%,%band%)