Attachment not found in PM after upgradation to 16.2.

I have a process model which triggers through an Email which contains an attachment. It was working fine earlier but as I have upgraded from Appian 16.1 to 16.2 It is not showing the attachment in process model which is sent alongwith the Email, but when I tried to make a new copy of that process model than the newer process model is showing me the attachment properly.

OriginalPostID-232184

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