Apply checkbox on mass update is not respected

AI generated answer (using internal Slack threads):

Based on the conversations, it seems that the 'Apply checkbox' on mass update is not respected due to a few reasons. 1. The fields that you want to update must be visible on the default form. If the checkbox field is not visible on the form/screen, it will not update even though it shows on the import mapping. 2. Each item type needs to be updated separately. 3. When updating the 'isclosed' checkbox on a Sales Order, you don't need to do 'Override Sublist'. If you have 'Internal ID' and 'Line ID', you should be able to update that box without overriding. Remember to isolate the items you want to update with specific criteria before running the mass update. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******