Need help regarding CS Executive both groups 2025 eligibility and pre-test

Hi everyone, I had registered for CS Executive in Dec 2021 and my last attempt was June 2023. I haven’t appeared in any exam after that. Now I’m planning to give both groups in Dec 2025.

Just wanted to know if I’m still eligible for december 2025 both group because the registration is already over but I have the old one valid. So if I switch over to 2022, can i give 2025 attempt?.

Also I had already given the pre-test earlier under the 2017 syllabus. Do I need to give it again or will that still be valid?

If anyone has an idea please help. Thanks.