I used it in both directions during recent half term ( Sunday from Paris and Friday from Cerbere ) and was running then as it was running on all other days ( was checking multiple dates for the travel ) .
Only point I could say, is that the Latour de Carol portion was not running on Sunday from Paris but it was added to the consist on return journey .
The return journey also took us through Bordeaux instead , more direct route through Limoges .
Note ! .
The train from Paris terminates at Portbou ( Spain) but the return journey starts from Cerbere ( France) .
There are trains run by both SNCF and RENFE across the border to get from the former to the latter .