Why am I getting the option to choose Tier 2 migrant categories when applying for ILR for dependents

I am applying for ILR for my partner and children, I already received my ILR last 2 months. There is a question asking " Which visa is Doctor xxxxxx applying for or been granted?" in my partner's application. The only options are different types of Tier 2 visas I was expecting to see options like ILR which I have already moved to from my Tier 2 General.

We are all currently in the UK since the last 5 years.

Is there something am not doing right?

Select ilr, your current status.

I think you should choose the visa you were on before. You also need to enter your former sponsor details too. It is normal