DO12 - {datetaken|D#yyyy-M-dd}

This is the saved rename code I ran in DO11

Name {datetaken|D#yyyy-M-dd}

But in DO12, you'll notice the 'day' gets chopped off:


If I add a space after the curly brackets, it fixes it:


Is this the new way this is supposed to work? I already updated my preset because the end result is what I want (a space after the date and before the sequential numbering).

Looks like a bug in the beta's new rename stuff.

This isn't new behavior, Opus 11 behaves the same way. By design the sequential numbering function removes any existing numbers from the end of the string before adding the new number. You can override it by adding [#] to specify the position of the sequence number.