Lightroom Classic plugin which add last modified photos to a collection.
The sarch not only looks for the last edit photos (i.e. property touchTime). This is what a smart collection would do if you choose Date/Edit Date. It also looks for the EXIF dateTime property which is set when a photo is changed by Photoshop.

#Requirments

none

1. Download the zip archive for your operating system from GitHub.

2. Extract the archive in the download folder

3. Copy plug-in and resources into the configuration folder of Lightroom

   1. On Windows
      Goto Downloads/LRLastModified-1.1.1.1 and double click install.bat. Install.bat copies the plug-in into:

      <User Home>\AppData\Roaming\Adobe\Lightroom\Modules\LRLastModified.lrplugin
      

   2. On macOS Open a terminal window, change to Downloads/LRLastModified-1.1.1.1 and execute install.sh:

      -> ~ cd Downloads/LRLastModified-1.1.1.1
      -> ./install.sh 
      

      Install.sh copies the plug-in into:

      ~/Library/Application Support/Adobe/Lightroom/Modules/LRLastModified.lrplugin
      

4. Restart Lightroom

The plug-in searches for photos which where changed in the last X days. The resulting photos will be added to the collection Last Modified. The sarch not only looks for the last edit photos (i.e. property touchTime). This is what a smart collection would do if you choose Date/Edit Date. It also looks for the EXIF dateTime property which is set when a photo is changed by Photoshop.

Goto Libray/Plug-in Extras/Search last modified photos. The Search Last Modified dialog box appears:

• Input field: Last modified before X day(s)
  All photos will be found which were edited by lightroom or photoshop in the last X days.
• Checkbox: Clear collection
  If selected existing photos in Last Modified will be removed from the collection