Here's what I believe the timeline was. Park Ridge was originally on 25129 when Des Plaines switched over and still dispatched them, Niles, and Morton Grove. When Des Plaines closed and Park Ridge PD went to WSCDC, they ended up on 25144 with Elmwood Park. Now Park Ridge has gone back to 25129, renamed Cook Metro North and dispatched by Cook County, and Elmwood Park is still on 25144 dispatched by WSCDC.
25129 is showing up as TDMA, 25144 is not and never has as far as I've logged.