[Tei-council] P5/Utilities-1 and P5/Utilities

Dear all, while working on some old TEI->LaTeX->PDF issues I stumbled (once again) across those two folders P5/Utilities-1 and P5/Utilities in the Guidelines repo. Can somebody shed some light on the difference of these folders? I’m especially interested in the file guidelines-latex.xsl which exists in both directories but only the one in Utilities seems to be used for building the PDF version of the Guidelines? Many thanks Peter