I have a number of class libraries which reference the Wealth-Lab Pro WealthLab.dll. Will these class libraries continue to work in Wealth-Lab Developer (assuming they are moved to the new directory) as long as I haven't uninstalled Wealth-Lab Pro?

Obviously, I'll eventually go through all of them and change the references, but as we all have had things thrust upon us that we didn't expect, my first priority is making sure there aren't any hard wired directory references in the ones I use every day.

Yes, they continue to work in WLD if you move them to the WLD main folder. AFAIR, WealthLab.dll is the same (assuming same build number) - it's shared between installations.

P.S. Referencing WealthLabPro.exe would be a different case, of course.