can you use a winn dixie gift card at a harveys?

Nope just the green Harvey one

Yes

When they first switch over you could have. I don't know about now.

You can use it but sometimes it's on the manager if they take them. But I've had no problem just use it asap.

Here is a quote from their website: "Harveys is saying goodbye to Plenti and hello to a new rewards program this summer – SE Grocers rewards. You will still be able to earn and use Plenti points thru July 10. Fully registered members will be able to take unredeemed points earned in Harveys to the new program!"