Exactly. The broad strokes of the prior Young Justice continuity is back, but the exact details, as they always are, have been revised and updated, most significantly with Cassie now being the granddaughter of Zeus as opposed to his daughter.
If anyone is expecting a complete reversion to Pre-Flashpoint continuity, you're setting yourself up to be disappointed. That's not how DC's continuity revamps work or have ever worked. It's always a new deck of cards every time, reshuffled with the strongest elements of what works best in the past.
DC's continuity has always worked this way. It's always been a buffet of various eras being used, re-purposed, and remixed. Sometimes parts are discarded and replaced with something new, then swapped back when that doesn't work, but even then it's not exactly the way it was before.