If the gift type is not set from the source:
If the account already has a current activity (in the Account Activities screen) for that activity_type, TA will use the gift type rule for that activity if there is one. If the gift type rule on the current activity is blank then it will use the gift type rule on the activity.
Note that the current activity is not necessarily the same as the activity on the source of the transactions you are entering.
If you have questions about this or the gift type rules used by your organization, please create a support request at www.blackbaud.com/support providing the details of the issue and referencing this solution.