I think there might be a little problem with exporting /importing tags that use UDTs:
I made two UDTs (one inside another) and the “child” UDT uses parameters.
Then I made some instances of the main (parent) UDT and set those parameters. Everything went ok.
Then I exported the entire SQLTags tree to a .csv file and imported it in another server.
The UDTs were created correctly but not the instances. Although they were created they lost the parameters for the children UDT tags.