I have my Forerunner 406 runs in Garmen Connect & now want to add hikes from my Forerunner 15. Garmin Express asks me to delete the ANT Agent software before adding the Forerunner 15. Will the runs from Forerunner 406 still remain? Do I just reinstall the ANT Agent software afterwards? Can I then download from both Forerunners??
Assuming you are referring to the Forerunner 405, you can also add that to Garmin Express. Garmin Express is replacing the discontinued ANT Agent software. Please see the FAQ: What troubleshooting steps should I try if I am unable to pair my ANT fitness device to Garmin Express? if you have problems pairing the Forerunner 405.