Moving imported hatches from Rhino 6 to Rhino 7

Rhino Rhino for Windows
1

I have a pretty large list of imported hatches in Rhino 6 I’d like to move to Rhino 7. Is there an easy way to do this?

2

Hatch patterns, like linetype patterns, are stored in the 3dm files in V6 and V7.
Maybe you created a V6 Template file with the patterns you used?
Import those patterns from a V6 file that has them into a clean V7 file, and save it as a Template.
Then use it when you start new models.