I need pointers: I have SFMC journey which is using DE and email based template (in email template amp script I am updating on flag based field on my payload) as next step I would like to use that flag value in decision element to trigger another follow up email template but before decision element value coming as NULL, wondering why isServiceEmailRequired boolean is NULL as I can it is updated to DE properly (True) as part of UpdateDE?

need pointers,

I have a journey in Marketing Cloud whose basic function is to pick up subscribers who click a link in an email, hold them until a date defined by their entry source Data Extension, add a wait interval until 4pm on that date, then send them an email. I had around 3,800 contacts being held in that wait step yesterday, expected to progress to the email send step on 1st or 2nd May. However, 2,800 of them instead progressed to the email send step at 4pm yesterday.