Having difficulties getting CSV import to Garmin

I had an other account that I wanted to merge. I exported all those activities as a CSV Now, I'm trying to import those activities into my other account to get everything merged properly. This is not working at all. Please help!!!!

0 trux 18 hours ago

Activities cannot be exported as CSV. You only exported the activity list, which does not include any details, apart of very sparse summaries. And that list cannot be imported, for that reasons. You have to export the activities as "originals" (FIT files). Those can be then imported into another account without any problems. You can also request a full data dump at Garmin | Account | Export Your Data to facilitate the task.