Carrying baby/toddler to taxi when moving out

[Hammie]

When I got the Sims 2 games of my own in 2006, I played the Goths and when Don and Cassandra got married I had them adopt a baby girl called Sophie. I had them move out because one of them rolled the want. I had Cassandra 'find own place' and when the taxi came Don picked up baby Sophie and their biological daughter Macy who was a toddler was picked up by Cassandra. Both of the parents carried their children and got into the taxi carrying them. I tested other houses and it did the same. But now I have all the Sims 2 games and the baby (if it's an infant) just vanishes and the toddlers will crawl down the street or to the steps. Is there anyway to enable adult Sims carrying their small children to the taxi with them again?