“Bulk import” only add the device to your cloud account without turn on this option on the firmware. You still need to turn on the cloud option on the firmware.
If you have a lot of device (aka, a business customer) we do have a business firmware which has cloud option enabled by default.
I do have a “business” account on GoodCloud, but the number of devices is still at the SOHO scale.
If the business firmware is kept up-to-date with the “regular” firmware releases (i.e. no feature/bug fix penalty), I would be interested in evaluating.