Buybuybaby gift cards suddenly worthless

We bought our nursery furniture last year from Buybuybaby and received a gift card as part of a sale. Went to use it today and noticed the website is now part of Bed Bath & Beyond (again). At checkout, it only allowed use of BBB gift cards and there was a bubble that said Buybuybaby gift cards from before March 17 were no longer accepted. No warning was given.

I am going to reach out to customer service to ask why gift cards weren’t transferred since this wasn’t a bankruptcy, but a heads up to anyone who received gift cards and haven’t used them.