Syncing folders outside Dropbox using Symbolic Links and Junctions

I've been reading a lot of information on this and yet I'm still unsure if its possible.

What I want to achieve is: sync a folder that is outside Dropbox and any changed to that folder or the files within get mirrored to the Dropbox folder and the Dropbox server.

This is what I've tried:
I've install Link Shell Extension.
Picked a folder with 10 pictures inside and created a junction for it inside the Dropbox folder.
When I delete a pictures from inside the original folder (outside Dropbox) the change is reflected in the Junction folder inside Dropbox Folder, not on the server.

The exact same behaviour with the Symbolic Link option.

If I manually select Pause Syncing from Dropbox system tray icon and then Resume syncing = it uploads the changes to the server.

I know I can move all my files inside Dropbox folder and create the junctions/symlinks at their original locations but I want to do it the other way around.

Also what is the difference between choosing the Junction and Symbolic Link Option in regards to a folder?

Thank you.