If you run into problems trying to set up the source information for import, follow the 4 steps shown below:

For instance, if you are changing from Qasper Online Corporate to Qasper Personal, follow the steps in order, and you should end up with a screen like this:

Steps 1 and 2:

Steps 3 and 4:

When you save, confirm [Yes]:

Finally, it will look like this:

From there, click [Step 2: Select data] and continue the import process.