AutoCAD 2013 :: Room Tag Blocks Not Searchable In Exported PDF

I've been banging my head on this for a couple days now and to no avail. I am accessing 2004 DWG files through AutoCAD 2013 in order to update dates and re-print to searchable PDFs for our facility team, however, I cannot get the DWG text (stand alone or room tag attribute) of the file to become searchable in Acrobat X. Being a 2004 file and due to previous manager decisions, all text in the DWG file is an SHX style, and I've attempted to change over to the True Type format in hopes that it would clear the issue up, but the base DWG file doesn't seem to agree with changing current fonts for either stand alone or within the ROOMTAG block itself. I've tried all settings in the Acrobat "convert to PDF" settings menu without success.

I'll be migrating all of our drawings into a Revit format for this effort next year so this is the last year for the "legacy" drawing files that have accumulated over the years...and I've already tested this in Revit with much success!