A belated thanks Rontilby. Yes, I found that same feature when I went to the Stake computer to create a custom list for our Stake Presidency. Even though there is no “criteria” for it, I was very pleased that there is a “format” option for having children. About half of the singles from my list in our ward had Yes for children, and the others No. That gives us what we need.
I hear you Greggo on the challenges we have in updating records of the less-active and inactive. I have neighbors whose son was just married, and so I’m anxious to try and get the necessary info to record it (for starters to find if his wife is a member or not, and if so to get her birthdate so I can get her record). But I think these membership updating efforts are worthy of our hard work, often with assistance from our bishops and other ward leadership. We do the best we can, with great reliance on the Lord thru the Holy Ghost for guidance.