Two projects, same virtualenv (same opencv), one autocompletes on import cv2, the other doesn't

I have two separate projects, proj1 and proj2. Both use opencv with `import cv2`

proj 1

• was created with a virtualenv called env and I pip installed opencv-python.
• displays "No suggestions" on cv2.imread and doesn't display any documentation
• proj1 can autocomplete and show Documentation if I `import cv2.cv2`

proj2

• was opened on pycharm and instructed to use proj1's env.
• autocompletes cv2.imread and displays Documentation in the side window.

I searched the web everywhere and was hinted the cv2.cv2 solution but this works on one and not the other.

I can provide the .idea xml's or some config files you need.