Text Catalog For ACA Notification Email-Effective Date Question

Hello!  We just made our 1095C's available and sent out the notification.  I created a new entry effective dated 1/1/19 for the content of the notification email as well as a new entry 1/1/19 for the subject line, but the new email content and subject line were not sent out; the old content was.

Does the effective date need to be within the calendar year we are reporting on?  I didn't assume so; I assumed that as long as it was dated before the date I sent out the notification it would pick up the change.  I made the changes after we created the XML and PDF files.