You change the patch in your midi synth - unless the patch is hard coded as a CC event in your midi file.

So did you look in the CC Event Editor to see if a patch was included in the midi file? If it is, you need to remove it.

Then you need to use your midi synth to assign a new patch. What midi synth are you using?

Dan, BIAB2024, SoundCloud Win11, i7(12thGen), 32GB, 1TB SSD(M.2 NVMe SSD), 2TB Libraries, 1 TB(WD-Black), 2TB SSD(M.2 NVMe SSD)Data, Motu Audio Express, Keystation 61, SL88 Studio, Reaper