Move imported analytics data into a Tag Manager

I managed to import analytics data from Google Analytics into Matomo.
Now I wonder if I could keep those data and “wrap” them into a Tag in a Tag Manager or if the only way is to create a new tag, meaning that I will lose/separate the tracking data

The idea is to have Tag Manager to easily handle different environments and other tags, while retaining within TM the data imported from GA.

Note that the import data do not come from Google Tag Manager, they come from Universal Analytics and so for now I don’t have any Tag Manager, only Analytics data