Currently, when including membership fields in Donor Acknowledgements, the letters only look at the membership transaction that is linked to the gift. Therefore, if we want to include "Joined on date" on the Fields to Include tab, the data only populates correctly if this is the first membership transaction linked to the gift being acknowledged. This field can appear incorrect or blank when acknowledging a gift that is linked to a renewal/rejoin. Some users include membership information in acknowledgements, and the Date Joined from the membership history would be a helpful field to include.