Lightroom :: Changing Export Location When Using Publish Services To Hard Drive?

I work for a distribution company that sells 15+ product lines. For almost every product, they have a photograph. I was asked to set up a system whereby a number of sales representatives could access these photographs in an organized fashion from their own computers. This is how I have set things up: A media computer (backed up onto an external hard drive) has all the raw files. In lightroom I have set up two publish services to hard drive. The export location for these two publish services was an external drive that was accessible throughout the company network. Unfortunately, while I was gone, the external drive was changed over to a cloud-based system. As such, the export location for my publish services no longer exists.
 
Of course, I could go and re-create the publish services, but unfortunately that would be an incredibly laborious process because each publish service has 10 or so sets with 2-4 levels of folders amounting to several hundred folders that would need to be re-created. Moreover, because of the complexity of the system, I made them all smart-folders with specified attributes, etc. So re-creating all these folders would take a whole lot of time.
 
So, I was wondering if there is any lightroom wiz out there who knows a work-around for my issue.
 
Now, I did do some digging already and I came across this article: [URL]   which outlines a method for changing the export location! However, as far as I can tell, I would still have to change the export location of each folder manually, which would basically be just as complex and confusing as recreating the publish service anyways. Am I correct in this thinking, or using this method is there a "root" folder than I can change, which will change every other folder?