@Marinus-van-Deudekom said:
What I meant was if you want to tranfer using the cable connection wait for Windows to recognise both the XT and the SD card. Don't trafer the export to a SD card. You're completly wright about that.
If you want to learn about the use of the SD Card for routes, reference the following from user "jheath", the moderator of the Zumo XT Forum out the UK. If you don't know of him, he's probably forgotten more about the XT than most of us know. Anyway, here is some of the documentation he's compiled:
https://zumouserforums.co.uk/XT2-P338
From the link:
**You may notice in older posts about other Zumos that I have recommended using Internal Storage for GPX files. Not any more. For the XT2 I always transfer my GPX files to the SD card. The files cannot get altered and nothing gets deleted.
More than anything - the behaviour is predictable. And if your Zumo Collections get messed up, you can delete the lot and import them again.**
That forum is a treasure trove of Zumo XT/XT2/XT3 information. If you ever decide to give the XT's a try again (hopefully an XT3), following the teachings in that forum will give you a fighting chance of success the next time around.