Terran's method to backup a folder using DropSync Pro:
Beginning again at the LectureNotes board, we are going to make a backup of the notebooks board, and restore the board once we have changed the directory location.
After this step, exit the upload/share dialogue as we already have a local copy stored.
'sdcard0 (or the name for your internal storage)' > 'Android' > 'data' > 'com.acadoid.lecturenotes' > 'files'
Now check the 'LectureNotesNotebooksBoard.zip' and click the 'copy' icon.
Now create a new notebook folder in your file tree where you want it to be stored. I created a new folder on my internal SD storage and named it the default 'LectureNotes'
Paste the zip file into the new folder.
Navigate to the 'Storage' tab and click 'App Directory Setup'
replace 'LectureNotes' with your folder name if different.
If you want to store the app directory on the external sd card you'll change the third option to:
Open LectureNotes and open the drop down menu, and choose 'Restore Notebooks Board'
Choose your file browser and navigate to the folder you copied the zip file to, and select the zip file. Now your notebooks will be loaded into the new directory using your zip backup.