You can find replacements that do this such as Gyula's Navigator, Midnight Commander.
Any reason to use Microsoft's Explorer?
And if the goal is to SYNC why not use nice apps like SyncBack or GoodSync?
I want to create dual pane with explorer to copy, move, or synchornize between folders and/or drives. Like the old Norton Commander and Windows file manager. I also like to keep the dual pane format when called upon.