Problem: Mimic “Open in” from DEVONThink Togo to open txt file

This may be simple but I have yet to figure it out. Very little experience in Siri Shortcuts.

My desired workflow:
Want a Siri shortcut to work on Markdown txt file from DEVONThink ToGo into iA Writer.

Currently DTTG doesn’t allow “open in” the share sheet for iA Writer. I can “copy to” but for obvious reasons that is not acceptable. I can open from iA Writer successfully and have the changes reflected in DTTG, but I would like the reverse too.

I was thinking I could just open a UUID using an iA Writer url scheme, but I don’t know if the “path” of the file to open can be a UUID.

Any insights?