During the editing process, the Version control feature is useful for both individuals and small workgroups to browse and track different versions of a file. This is useful if you want to revert to or compare different versions of files.
The Version Control folder maintains a log of the items added and removed from the folder, with the name of the original file and the number and details of each version saved. When a catalog is closed, Microsoft Expression Media automatically purges version control files for entries that have been removed from the catalog. The size of the folder grows depending on the size and number of copies of files. It's a good idea to keep the folder on a volume that has plenty of storage space.
To use version control
On the Window menu, click Image Editor, and then click the Setup button.
Navigate to the folder where you want to save backup copies of version-controlled files.
Make sure that you use a separate folder for each catalog.
Once you assign a version control folder to the catalog, you can begin to modify and back up media files. After you have edited an image, click the Save button in the Image Editor panel.
In the Save dialog box, select the check box Save in versions folder. Expression Media automatically assigns the current time and date, and then saves this data in the export log in the Version Control folder, together with a backup copy of the file encoded by Expression Media. You can examine and compare any backup version at any time by clicking the different versions in the list.
Once you have at least one backup copy in the Version Control folder, you can choose whether to swap, replace, or delete backup images.
To swap an image
Select the image in the Media Versions section of the Image Editor panel, and then click the Exchange icon.
In the subsequent dialog box, click Swap to switch places in the hierarchy with the current version being edited. Click Replace to delete the current version and replace it with the selected backup version. To delete the backup version, click the Delete icon.
If you click Delete, this action cannot be undone. The file version you selected will be permanently deleted.
Expression Media also has version control support for image editing performed in third-party programs, such as Adobe Photoshop. For Expression Media to recognize these edits, you must have the Image Editor active and open the image file with the third-party editor by using the Open With Helper application menu. For more information about Helper applications, see Editing media in other applications.