Which is best...child birth certificate

[sars_notd_virus]

So we applied for a late birth registration for my Son which was born in a Hospital, but the problem is my wife has already two kids with her past husband but they weren't married. I wanted to register our son as our First Baby but we cannot change the hospital records anymore.

...may i ask why u want to put your son as 1st baby when in fact your wife got 2 kids already?

[suizcon]

...may i ask why u want to put your son as 1st baby when in fact your wife got 2 kids already?

because her children is not in her name and is not living with her anymore.
also thinking that it might be better so the visa for her / passport of our child will be easier to get without any complications.

will that be better or won't matter anymore?