Shift A Dimensions

[edcsteve]

Shift A Dims, does not erase or update, it just keeps adding more dimensions.  is there a way for it to just update when Shift/A is used?

[Alaskan_Son]

Auto Exterior Dimensions Should automatically remove and replace any previous Auto Exterior Dimensions unless you have previously edited those dimensions in any way.  Per the Help files, any edited dimension "...will be marked as edited, so if Auto Dimensions are later regenerated, your changes will not be lost."

[glennw]

Have you tried turning on Auto Refresh in the dimension defaults?

This will delete the existing auto dims and auto replace them when you change anything in the plan that will affect the auto dims.