Joining tracks from different devices - how?

Former Member
Former Member
I've got two data tracks, one from a 310XT and one from a Foretrex401. I'd like to join the two so I have one track rather than the only work around I have found by having both tracks individually in the same folder.

I realise the data sets will miss some things; i.e., the 310XT may collect some data that the 401 doesn't, nut all I'm really interested in is the location, overall distance and overall ascent/ descent & time. When I go to use the join function it is greyed out. The same happens with my Forerunner 305 and the data from the 401.

Any thoughts or is it only possible by expeorting the data as a CSV and hacking the two together in notepad or excel?

Thanks in advance for any help!