DeltaV Alarm type reduction

I am trying to reduce the number of alarm types; I have dumped the SAM output to XML and had excel count all the occurrences of each alarm type. I had 24 unused alarm types come up.

I was able to delete 23 of these 24; the last one gave me the error message "can't delete because it is used in an alarm parameter".

This gives me two issues; firstly I selected all the areas using SAM and dumped this to XML, but at least one alarm was not picked up...how many others have been missed. Obviously I was able to delete 23/24 alarm types so it can't be that many, but this makes me worried.

Secondly and most importantly is there a way to search for alarms using only the alarm type as a parameter? I am new to DeltaV and have not found any thing in the documentation yet.