Thanks for a answer.
Open the Options dialog | Advanced | File Locations section. Please see the Projects, Maps and Templates folder location.
Now quit Offline Explorer Pro , open Windows Explorer and browse to that folder. Select all files with the webdown filename (webdown.dat is the Projects file, the rest are backup copies) and copy them to another directory to keep them intact.
Select the most recent file with the maximum size and copy it back under the webdown.dat filename.
Start Offline Explorer Pro to see if all of your Projects are in place. If something is wrong with the Projects list, try to repeat the process with another webdown file.
If I understand correctly your method helps for a case with each project separatly (if there are the same files in internet-site from which they were downloaded).
What can I do for linking existing files on my harddisk with projects in OE? It's needful, for example, for exporting downloaded files into other HD-folders in accordance with their thematic downloading.
Maybe the next fact is important. At first, folder, in which files were dowloaded, was placed in built-in HD of my computer. Then I moved this folder into another extended (local) HD which I connected by USB port. I pointed new path of this folder in File Location Options and I pointed the same path in Options of each folder including projects in the main window of OE also. Then I restarted OE but Projects were empty despite my actions.
Could you help in this situation?