User Print Templates in LR Classic 15 Lost Their Associated Color Profiles

I just went to print for the first time after upgrading from LR v14 and discovered to my dismay that all of my custom print templates in LR 15 on Windows had reverted to Color "Managed By Printer". The dozens of color calibration profiles I have for various printer/paper combinations had become unlinked from my templates. In addition, the drop down list of available profiles (the ones from "Choose profiles to appear in the popup") was empty.

I managed to track down the problem to a case sensitivity issue by diffing one of the print templates I repaired against the copy that worked fine with LR 14 and earlier. In all of the lrtemplate files and the LrTemplateCache.lrcache in C:\Users\<username>\AppData\Roaming\Adobe\Lightroom\Print Templates, LR14 and earlier had written the paths to my color profiles using upper case for my Windows directory like this:

printingProfile = "C:\\WINDOWS\\system32\\spool\\drivers\\color\\Canon Pixma PRO-100 XPS - Red River Palo Duro Softgloss Rag.icm",

when in fact, my Windows directory is proper case. Apparently, earlier versions of LR didn't care about the case mismatch in the icm paths. After I did a global search and replace of "WINDOWS" -> "Windows" to all files in my C:\Users\<username>\AppData\Roaming\Adobe\Lightroom\Print Templates directory, LR 15 now loads my print templates with their correct associated color calibration.