Anyone else getting none-existant Delta schedule changes?

[mitchja]

For one of my VS bookings to FLL in Dec/Jan (mixture of VS + DL flights), I keep getting schedule changes for one of the DL flights (the FLL>JFK leg), except the schedule isn't actually changing.

The only thing that is changing is a fare code. When I originally booked it was a Z fare via VS for all the flight legs including that particular DL flight.

I did initially get an actual schedule change for that flight but at the same time the fare code changed to a C on just that flight leg, then a month or so later, another schedule change email arrives but with the same departure / arrival times, however, the fare code was then a J.

Yet another email arrives today and again the times have not changed, only the fare code; it's back to a C now!

The flight looks reasonably wide open :

DL 46 0 FLL 03/01/19 12:45 JFK 03/01/19 15:39 739
J9 C9 D9 I6 Z2 W9 Y9 B9 M9 H9 Q9 K9 L9 U0 T0 X0 V0 E9

I'm not complaining as a C on a DL flight <3000 miles earns me 40 VS TP's instead of 20 for a Z but I'm curious as to why this keeps happening?

What with this flight leg change and the VS JFK>MAN date / aircraft change malarkey I've probably now had around 7 schedule change emails and counting for this journey so far

If it wasn't for the fact that the fares are so good I would have given up booking VS/DL flights.

As soon as I booked LHR ATL SAN, the DL app showed me on a 600am flight home, VS still shows a 1030am departure.

Schedule changes all the time, except nothing changes.