I figured out my issue. It was happening when I sold a call option and then closed out the option at a loss. Fidelity was reporting it as a net negative number. To fix it I went and updated to show both sides of the transactions. So I showed my initial sell (basis) and showed proceeds as a lower amount. They still net to the same loss but my basis is no longer a zero. Luckily I only had 3 to manually fix.
