EDIUS 11 is unable to merge Bin search folder if a project is created by EDIUS X. If selected project is created by earlier version of EDIUS and it contains Bin search folder, below message will appear.

Click [OK] to open selected project. Bin search folder will disappear in opened project.

IMPORTANT NOTE ON SAVING PROJECT
If you may open the project in earliear version of EDIUS, USE ‘Save as’ menu. If you use ‘Save’ menu, Bin search folder also disappears even though loading it in earlier version of EDIUS.
If you no longer open the project in earlier of EDIUS, you can use ‘Save’ menu.