I use OE for emails & use OL regularly to import/backup from OE, transfering messages, addresses, etc. From my experience addresses do NOT move permanently from OE to OL. Even if they did you could import/export them back - give it a try. HTH, G
OnePlus 6T to be sold on contract in UK from O2, EE and Vodafone
Adobe takes the limits off Typekit, renames to Adobe Fonts
Surface Laptop 2 vs MacBook Pro
Où acheter un Mac ?