I've figured out a few regex but this one is beyond my ability. Please advise. Thanks!
You can try it with ([.+digital\sremaster])
( = Begin group
[ = Look for opening [
.+ = anything with 1 ore more chars
digital = searchtext1
\s = White space
remaster = searchtext2
] = Look for ending ]
) = End Group
Replace the result with "nothing" or a space, as you need it.
As always: TEST it on some examples before you use it on your entire collection!