A smart rule to move tags into groups on moving into database

I am trying to create a smart rule that moves new tags into specific groups (converting them into group tags) based on the tag prefix. For example, if ‘rk’ is the prefix - i.e., rk.tag1, rk.tag2, I want to move them into RK.Group etc. for different prefixes. I have written a smart rule script that looks at each tag of an item, checks whether it exists as a group tag already, and if not, files it into the appropriate group.

I want the script to trigger when I move the item into its database from the global inbox. The smart rule works well when I run it on demand on an item in a specific database – the ordinary tags are converted into group tags in the right locations. However, when I trigger the smart rule to be ‘on moving into database’ and move an item into the database, it moves the tag into the group tag location, but the item is not there. It creates an empty group tag. The item still remains, but with the original ordinary tags.

I am not sure if I have described it well, so I am including the smart rule and code below and am happy to clarify further.

As a specific example of the problem, if tag an item with ‘rk.tag1’ and move it into the database, the item appears in the database with ordinary tag ‘rk.tag1’ and an empty group tag ‘rk.tag1’ is created in RK.Group. When I run the smart rule on demand on the same item, the ordinary tag ‘rk.tag1’ is converted/moved into a group tag ‘rk.tag1’ in RK.Group and the ordinary tag is gone. The item now appears under /RK.Group/rk.tag1.

Here is the smart rule:

and here is the script:

property pGlobalSearch : false -- Set to true to search in all opened databases. Otherwise the current database of the records will be used.

property defaultTopLocation : "/TagsToSort"
property topTagLocation : "/Tags/"

property maxPrefixCharacters : 2

--NOTE Toplocations must already exist
property FileLocations : {¬
	{prefix:"rk", Toplocation:"/Research/RK.Group"}, ¬
	{prefix:"rm", Toplocation:"/Research/RM.Group"}, ¬
	{prefix:"rj", Toplocation:"/Research/RJ.Group"}}


on PerformSmartRule(theRecords)
	tell application id "DNtp"
		try
			set oldDelimiters to AppleScript's text item delimiters
			set AppleScript's text item delimiters to "."
			repeat with thisRecord in theRecords
				set theTags to tags of thisRecord -- remove for SR
				if (count of theTags) is 0 then return -- if no tags then return - remove for SR
				repeat with thisTag in theTags
					set thisPrefix to item 1 of (text items of thisTag)
					if (count of characters of thisPrefix) is less than or equal to maxPrefixCharacters then
						set theQuery to "name==" & thisTag & space & "kind:grouptag"
						if (pGlobalSearch) then
							set theResults to search theQuery
						else
							set theResults to search theQuery in root of database of thisRecord
						end if
						
						set didMove to true
						set numResults to count of theResults
						if numResults is 0 then
							set destinationTopLocation to my retrieveTopLocation(thisPrefix)
							set tagRec to get record at topTagLocation & thisTag
							set destRec to get record at destinationTopLocation in database of thisRecord
							move record tagRec to destRec
						else if numResults is greater than 1 then
							log message info "Ambiguous destination." record thisRecord
							set didMove to false
						end if
					end if
					
				end repeat
			end repeat
		on error error_message number error_number
			if the error_number is not -128 then display alert "DEVONthink" message error_message as warning
			set AppleScript's text item delimiters to oldDelimiters
		end try
	end tell
end PerformSmartRule

on retrieveTopLocation(prefixToTest)
	repeat with rec in my FileLocations
		if prefixToTest is prefix of rec then
			return Toplocation of rec
		end if
	end repeat
	return defaultTopLocation
end retrieveTopLocation

Any advice?

?
Do you mean “nested tags”?

No, tags which are also a group. Basically moving the tag from the /Tags/ group where it behaves like an ordinary tag into a group so it can behave as a group tag. I’m not sure the right terminology, but it behaves differently if it is a group tag. Basically, I just want to move the tag into the group I designate.

I can possibly describe the issue better: When I move an item into a database, I want to check the tags and see if they exist in a specific target location; if not, I want to move them to that location. The target location depends on the first two letters of the tag and the database that it is being moved into.

Is this feasible? I thought I had solved it, but I am running into the issues described in my first post.