This didn’t work yet… but a hint. In mac the file didn’t open right in Atom, but worked great in TextWrangler
Here’s the grep search:
EncoderPresets\/SequencePreview\/.*
search and replace with
EncoderPresets/SequencePreview/b39d0224-c728-4ee7-9886-ccf837b5247f/DNX 290 1080p 59.94.epr
or whatever you found in your working file.
Hope this helps.