One of the main benefits of Lightroom is that editing is non-destructive. This happens because you don’t actually edit your image file. What you work on is the preview with all of your edits recorded in the catalog file. When you take an image from Lightroom to Photoshop, in some cases you first select what version from Lightroom you use, with edits, original file or copy. It can be somewhat destructive in Photoshop; there is a way to be more flexible. This is through the use of Smart Objects
Downsizing the image file in Photoshop can result in pixels being deleted from the file. This creates a resolution problem if you find you need to go back to the original size. Resizing a smart object changes the image size without deleting any pixels or information.
The one real drawback that might keep you from using this method is that you are placing all of your editing information with the raw file. This can lead to some rather larger files and create storage challenges.Despite this, I believe that the benefits of Smart Objects out weight these concerns.