My question is since there is no changes in tax due, can I just submit the correct 2023 CA state return, or do I need to amend the 2020, 2021 and 2022 california returns even though there is no change in tax due?
It depends. If you did not have your loss transferred to CA and wanted to use it for any year in the future, including the 20, 21 or 22, you would need to amend your return for each of the years. In order to include the carryover, it has to be listed on each of the prior years return carryover sheet, as it must be matched against the income in chronologically. So, if even if you couldn't have used it on your 21 return, but you could have on your 22 return, you would need to list it on your 21 return so it can be used on your 22 return and any years going forward. You cannot decide to just use it on your 23 return without showing that it couldn't be used on previous returns.
If you used it up or have no desire to ever use it in the future, you would not need to amend your returns
Capital Loss Carryover
Amend Your Return
Passive Activity Loss Limitations
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