Deleteing photos from device but still have them in the backup (default Google+) I've been looking all over for a proper explanation of how to delete photos from the device (nexus 5) to reclaim some space, while being sure that the pictures are still in the Google+ backup.
Unfortunatley i have not found one, other than "wild claims" it works somehow, while other say it does not.
Plus deleting photos via the Pictures app actually warns you (now?) that it will delete the backed up copies too. Do i have to delete them in the Gallery app?

I did delete some photos recently, and i was quite sure they ware still backed up (still showed up on the Google+ website) but looking now i see they are in the trash in the device.

Is there really no way to be able to know for sure if the pictures are backed up savely while i can delete them from the device?

Alternatively i'm also open for alternative solutions to this problem, or i just go back to the "good old copy and paste when plugging the phone".
With the latest update to Google+ something changed in the Photos app. To ensure you are deleting the right pictures take the following steps:

Go into the Photos app
Click on the top left corner for the side menu
Scroll down to Folders and click on it

You will be presented with the different folders on your phone. Delete everything from there and check your storage again.