I had to blow away the Temple wallet extension on Chrome then reinstall. I know I'll have to reload my mainnet wallet with the seed phrase, but I was trying to reload the wallet for my ghostnet account. The account address and keys were generated on the server using the octez client over a year ago.
Options to import the wallet into Temple is with a seed phrase, which I don't think I have since I'm using a hot key on ghostnet, or with a .tez keystore file. I was able to generate an encrypted key from the hot unencrypted key, but I don't know what format the .tez file needs to be. I tried a plain file with just the encrypted key in it and nothing else (not json) but Temple says not the correct format. This is the closest I could come to some information regarding a keystore format, but no idea how to generate that.