What software are you using? I'm using Garmin Mobile XT. It is available at this link -
https://buy.garmin.com/shop/store/do...ID=158&pID=272.
It is listed as beta software. It is the same that is used on mobile phone except you can't get live updates on traffic. The software installs plugin that will import address from contacts. When I want to create a route I enter the adddress in my contacts and search in the Garmin software.
If you are using an older version I might be able to help but it has been a long time since I switched.
To create a route you have to find an address. The Route function is for routes that you save.