Coinbase Pro data disappeared (inflating my tax bill)

I’m sure a few people are facing this problem: Coinbase has no idea what I paid for half my coins because they came from Coinbase Pro. And for some reason, my historical cost basis did not carry over.

So it essentially looks like I bought everything at $0 (which means my capital gains look way higher than they should be). I'm glad I caught this because otherwise I would've overpaid on my taxes.

The idea of getting a warning letter from the IRS because Coinbase can't be bothered to migrate data from their own deprecated product is making me crazy.

 This isn't on me. I didn't move my coins to some sketchy offshore exchange. I stayed on YOUR platform. You should have the data customers need for accurate tax reporting. It’s like why do I have to pay for CoinLedger/CryptoTaxCalculator/another crypto tax software because of your own company’s laziness. 

TL;DR: Coinbase Pro cost basis didn't carry over to Coinbase. With 1099-DA reporting coming, that's a Coinbase problem that's becoming a me problem.