48E General Credit Carryback

Research is telling me that Form 3468 Part V 48E credits should be able to be carried back 3 years. Is this true? In turbo tax 2024 under Form 3800 carryback I see the option for the Part V carryback identified as 1v, but going past that ( turbo tax 2023, and I presume 2022) there is no 1v available if I try to apply a carryback to those.

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