So, yeah the data mismatch is an issue, to workaround I took the.arrival time and created a simple script paired with an AO profile that formats the time and assigns to the custom 4 field which is seen as a string on the probe mapped fields.
Script:
a = alarm.get()
a.custom_4 = timestamp.format(a.arrival, "%m-%d-%Y %H:%M:%S")
alarm.set(a)
AO profile is on a 1 minute overdue age for the assignment to the custom field and AO profile to send to SN is 2 min overdue to ensure the field is popluated.
Also, my SN administrator had to do some conversion on the SN side to get the time to work correctly on the SN side, not sure what that was but it is working for us now.