Is there an easy way to import an entire league at one time?

So I imported to my new device per the instructions. Now, is there an easy way to do a bulk update on the players, i.e., download names to a spreadsheet, make changes, then upload to admin site?

Also, my players available for teams on admin site are not available on my device after multiple imports.

I thought there used to be a way to upload, or download, player names, etc, in the PLAYER LIST on my.iscorecentral.com.

I cannot seem to find this ability. I want to take data from an old device, update, then upload to a new account.