Yep - easily done too.
Simply package up your T:ANE route as a CDP Export. Export the sessions too (but consider redoing these with all of the new rollingstock and locomotive assets available in TRS 2019).
Import the CDPs into the TRS19 Content Manager and then check for any missing dependencies.
Since many of the built-ins in T:ANE have now been ported to TRS19 as well, it should result in fewer items being need to be replaced or downloaded from the DLS.
Mine all came across with very few errors or omissions.
They usually run and look better in TRS19 too!
I then replace the track with TRS19 PBR procedural-types and then replace many scenery items with newer ones to enjoy a fresh, new, more realistic look.
Happy holidays!