In the Quickroute software, I can never get the Crop Route feature to work.
With a route imported from Garmin, I click the Crop Route tool, click on the route, fill in the dialog confirming crop before or after. Click OK, and nothing happens... Or the whole route disappears.
I must be doing something wrong.
When I've seen this happen QuickRoute is cropping based on today, while the route is from some other date. I reset my computer date to the date of the route, then do the crop. (You can usually see the day Quickroute is using by holding down the OK buttin for a second.) I've only encountered this using a gpx file, not when I'm getting the track directly from the Garmin.
As of today this is still the case, sadly --- they never fixed the bug.
Thank you for the tip, Smoke
Solution: add a lap then crop. Also sometimes just crop in smaller amounts.