For those who use the midifile file import in PYRAMID, I found a very interesting and free software (open source): MIDIPLEX (download link: https://github.com/stascorp/MIDIPLEX/releases).
Allows you to load midifile type 0/1/2 and be able to edit midi events before import into the PYRAMID. An very interesting thing: calculating the total number of midi event file to check if exceeding the limit of PYRAMID. It also has many other functions that I let you discover 
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This is just a WOW for you! I have looked and found nothing free, and up popped your post.
A LIKE and a THANK YOU to you!