[Tim Heard]

I feel like I have seen this discussed, but I have looked through a page of topics with "contacts" in the subject line, and I don't see it.
I had a contact set up for one of my kids with an alias name created, just in case some database were to download my data. (This dates back to before I had a Blackberry.)
I just noticed today that my call log shows a record of having called her number, of has disconnected the number from her name. Similarly, I can see her name in the record of text conversations, but no number associated with her name.
I had to manually go in and restore the contact info.
My concern is that I have a LOT of contacts loaded onto my phone. ... Most of them are people I don[t interact with on a regular basis. .. If there's a known problem with contact information being lost, and a known solution, I'd like to address it now, before I lose important business contact information.
Thanks in advance for any suggestions.

[nah.uhh]

I didn't notice this til 10.3.1 but moodyk obverved the same on 10.2.1

I use contacts imex or the device switch app to create incremental backups of my contacts now.
Luckily I had a few vcf backups from contactsimex to restore from when I noticed.

Contacts went from 741 to 699

PassportSQW100-1/10.3.1.1154