I am using the CSV upload code to be able to use that via command line to import new users and assignments from csv with 10000+ users every day. I have found that each time I would re-run the script existing users from CSV file would have their Enrollment Start & End date reset to zero from non-zero.

The reason is the role_assign function using the parameters of timestart and timeend defaulting to 0 if not passed from calling code. As I'm synchronizing Enrollment dates, I can't use that feature to set the RA dates.

Hence I have modified the role_assign function to not set if zero is passed by timestart / timeend and non-zero values exist in the database.

if ($timestart != 0)

{ $ra->timestart = round($timestart, -2); }

if ($timeend != 0)

{ $ra->timeend = $timeend; }