Understanding calendar & contact storage

I've had my Keyone for ages but never got round to sorting this. I have 6 email accounts in the Hub, the main one being email1, where I want to keep all my data stored and saved for, when the time comes, use it to back it up to Google Drive to swap phones. Only when I store calendar events and contacts the phones stores them to email2 as default, sometimes I correct this and put email1 instead, but most times I don't.

1) Is there a way now to move all the calendar events and contacts stored to the email2 profile onto email1?
2) How on earth do I avoid this splitting storage between email profiles?