Last name didn't change after getting married.

"asphyxiateddoll;776362" wrote:
I moved two sims in together and when they got married, the female still has the same last name she did before they got married, and their child has her last name.

I have a work-around, but you must use

testingcheats true


then type

cas.fulleditmode


and rt-click on your sim. A choice menu will pop up. Choose Edit in CAS.

You'll be taken to the version of CAS we use when first creating a sim. From there you can click on her name and make her last name the same as her husband's. You can also do a lot of other stuff there, like change your sim completely, looks, traits, all of it.

I've only used it once for anything major, to get rid of my sim's blasted Loner trait because it was ruining his ability to make friends. Only found out later that miserable trait was the reason he was unflirty.