MIDI quantization defaults to "sixteenth" which is fine for most projects. But there's a lot of stuff I play that require a triplet.
I opened a project, Changed the value to 16th triplet, saved, closed and re opened, it had reverted to sixteenth again.
So I see that you can save the dialog box as a pre set . This seems to work. Just set your value and save as a pre set. The pre set will load with that project and /or a template.