Is there a way to utilize DataLink once a graphic is imported to Tricaster?

We have a stand alone version of LT, and have figured out how to use DataLink to update templates in that program and then send them to Tricaster for use during production (we're not going to have a graphics operator during production).

Is there anyway to build a template pointing to a text (or CSV) file, upload the template to Tricaster, then if the text file is changed during production, the graphic is automatically changed?

Does it make a difference if the graphic is in a buffer or GFX channel?

Tricaster AE 8000 if that makes a difference.