No authorized orgs after opening a project folder

Question

I have about 10 project folders. In each I used SFDX: Create Project and then SFDX: Authorize an Org.

When I use File -> Open Folder and open any of those 10 project folders, I loose:

1. Authorized Org
2. Can not use SFDX: Authorize an Org (the command is missing, I'd apparently have to use SFDX: Create Project again.)

Please help

Answer 1

Solved it.

Problem was that I did not open the folder of the project, but I opened a folder above the folder of the project. So given that the path would be:

C:\Documents\Something\ProjectFolder1

Correct folder opened: C:\Documents\Something\ProjectFolder1

Incorrect folder opened: C:\Documents\Something

Conclusion: Salesforce DX will connect automatically after opening the project folder.