InReach Explorer + not synchronizing route.

I am new to Explorer. I imported a gpx file for the Sneffels Traverse from SanJuan huts. All it gave me was waypoints Hard to use on the device. Some research tells me I have to create a Collection and enable for sync. I did that and put all way points in the collection. Synced, still no joy. I cannot see a route on device. By that I mean I cannot see it under routes on my device.

Maybe I dont understand the device and its use. I am gadget friendly however this device is perplexing. Please help, leave for my trip this friday july 3rd. Would like to be able to stay on a route (actively track my progress).

TIA

-Sean