Is this same or 2 different things…
Hi!
As far as I know, this little typo is just a holdover from early Halion 4/Halion Sonic 1 development (15 or so years ago).
There should be no functional difference between a “FlexPraser” MIDI Module and a “FlexPhraser” Module, but do note that the “FlexPraser” Module (with the typo) is placed near the top of the Program Tree, meaning that it will affect all instrument Layers below it.
You can use either in your case, but this might be worth knowing if things aren’t working as expected.