Imported 300 stops into MP.
Picked #1 and #300.
Let MP pick optimized route.
Then went back and adjusted routes to account better
for one way streets, right side / left side deliveries,
busy streets for wrong time of day etc. etc. to come up
with a better route. Even though I saved the file, every
time I open it up MP re-optimizes the stops on the route
and I loose all the time spent getting the route correct.

How does one disable MP from automatically trying to optimize the stops ?

Any assistance would be very much appreciated.