This idea was shared by Dale from ARHT.
When we create a global report using existing fields of forms/ safety report/ flight records ect, and upon creation of the report add a new custom field to the setup section, we have to recreate the same report from the beginning to get that new field to the 'Available fields' section. This is a hassle in case if you have to recreate many reports which have lots of fields, hence requesting a solution.
Thank you.