I have a new computer and would like my work from the old computer to show up. I copied the actual data over but I think there might be an ini or something that I need to update as well.
Just click File > Open Multiple Apps and check the check boxes of all you want to have open. Then click OK.
or
There is an ini file here: C:\Users<yourusername>\AppData\Roaming\SIL\App Builder\dab-settings.xml