Looking at https://wiki.almworks.com/documentation/structure/latest/data-center-and-server/inserter-extender-duplicates-filter-32223424.html
The example shows the "remove duplicates" can be added to the top of the "Add issues" generator.
I have the following:
Remove Inserter/Extender Duplicates
Add issues linked by Resolve: parent resolved-by children
Add issues linked by parent-child: parent parent-of children
Add issues linked by relates-to: parent relates to children
Add issues belonging to epics
Sort by Rank
Sort by Epic Name
Sort by Version / Delivery
Sort by Priority
Insert issues: project = …
However there is a error pop-up: "Cannot arrange items in this order. You were moving a generator."
When I acknowledged the pop-up, the "Remove Inserter/Extender Duplicates" revert back to the row below "Add issues belonging to epics".
Is there some restrictions listed on the sequence where "Remove Inserter/Extender Duplicates" can be added?