When should you delete a mistakenly created transaction rule?

Deleting a mistakenly created transaction rule should be done before recategorizing the transactions. The primary reason for this is to ensure that the rule does not interfere with your future categorization efforts. If the rule is active while you try to recategorize transactions, it may still apply to those transactions, potentially leading to inaccurate classifications or duplicates. By removing the rule before making changes, you can ensure that all transactions are categorized correctly according to your current preferences, without any influence from the erroneous rule. This practice helps maintain the integrity of the data in your accounting system and enables you to begin fresh with accurate rules for correct categorization.