I think using ITPAM should be the way...
SDM would need something to trigger some code to move
and in your case it seems implementation start date change
could be the trigger and if that is the case, the spel code it triggers would need to wait/pause for 48 hours before it finally check the status and set the flag. Doing this is expensive for
SDM spel server but if you put it in PAM it is easier to do and
less expensive.