If you would like to back up your project in a different application, you might have to consolidate your backup files in order to import it. I have written an AutoHotkey script that does this:
FileSelectFolder, WhichFolder, C:\Users\*\Documents\ConnectedText\Projects, 0, Select Project to Backup ; Ask
the user to pick a folder.
InPutBox, myFile, File, Select the File name for the Output File
FileSelectFolder, myOutputDir, Choose directory to write to
myDir = %whichFolder%
outputFile = %myOutputDir%\%myFile%
FileRead, aFileCentents, %A_LoopFileFullPath%
FileAppend, `n@@`n%aFileContents%, %outputFile%
You need to change the starting path to a directory of your own.
You can import the resulting file into a NoteTab Outline File by first opening it in Word, another Text Editor, or Word Processor that allows you to save the file in Windows format, not in UTF *. (If you click "Save as", you will be presented with the option "Windows (Default)".) You also need to insert the following line at the beginning:
= V4 Outline MultiLine TabWidth=30
also replace "##CT##" with "H="
and replace "[[" with "[" and ""]]"" with "]"
When you save the file, use the extension "otl".
The result is a NoteTab Outline file with working hyperlinks.
If you have more than 5400 topics, you are out of luck, however. NoteTab Outlines have a limit of 5400 outline items.