Great, thanks @samj1912
I was wondering, could you comment on this observation I have made earlier? :
.
And another thing I noticed:
The input for the ‘preserve these tags’ option seems to be case-sensitive.
I myself can not think of any useful reason that it is.
On the contrary, it makes it more troublesome to get it working, since you’ll have to worry about idiosyncrasies of other software and the different codecs you might be using.