No
There is a powerful feature in Shotcut called Save As.
This allows you to save the current work with a new file name, leaving the previous version unchanged.
You could use it like this:
MyPillowIsLumpy May 5 0430.mlt
MyPillowIsLumpy May 5 0830.mlt
MyPillowIsLumpy June 23 1200.mlt
Or like this:
project01 v21.mlt
project01 v22.mlt
project01 v23.mlt
A few extra seconds saving hours of work is always a win.