Updating your sync script
To add a student to the exclusion list (this specifically excludes a student or parent from being deleted), open the Perl script file in a text editor and jump down to the bottom.
There should be a line resembling:
exclusionList => '', #  of PK's that you wish to NOT be deleted if not
You will want to add into the single quotes an array with any Synergetic ID's you'd like to be excluded.
For this case, the line should end up looking like:
exclusionList => '["55190"]', #  of PK's that you wish to NOT be deleted if not
Come future students or parents that may need to be added to this list of exclusions, you simply comma separate the IDs like so:
exclusionList => '["52190", "ANOTHER ID", "AND ANOTHER ID"]', #  of PK's that you wish to NOT be deleted if not
Depending on the version of the script, the comment on the right (the part after a "#") may differ or not exist, don't worry about that as it has no impact on how the script operates.