Possibly more of a watch out than anything else, I had a report from a user of a cascading dropdown not working for a specific item.
The level one cascade is a Company Name, and in this case a fairly common O’ name of Irish origin. It looks like the single quote or apostrophe is stopping the lookup of the level two cascade value. My quick fix was to get them to remove the single quote from the name, but I guess it would be nice if the code could be modified slightly to handle such cases.
If you back up the old DFFS folder you can roll back the changes in case it don’t work as expected. In later versions of DFFS you can have multiple DFFS versions side-by-side and load the new one in one form only to test, but this feature is not available in this older version.