Hi pete_g,
First, thanks for taking the time to post this here, much appreciated.
I tried to reproduce exactly your flow (except that I chose UTC-05:00 Eastern Time under Convert Time Zone / Format String).
However, when testing the flow, I get the following error message:
'InvalidTemplate. Unable to process template language expressions for action 'Convert_time_zone' at line '1' and column '2541': 'In the template language function 'converttimezone', the value provided for the time zone id 'Full date/time patter (short time) - Monday, June 15, 2009 1:45 PM (f)' was not valid. '.
If you have any clue what could be the issue, or if you could pass the contact of the engineer who assisted you, that would be terrific.
Thanks,
Ben