I haven't been able to find out what changed, but Microsoft's July patches originally released 7/10 were re-released on 7/13.
This Microsoft site shows the new modify dates
I have a ticket in with support to see if Tuesday's PMImport will include the new revisions. I will report back. I don't think WSUS customers are seeing the new bulletins yet.
Just Google for "problem patch july 2018". The new MS scheme to release patches has in some points made it easier to patch with the montly releases, but it's far more difficult to find out what goes wrong when you aren't able to install some of those patches.
As per https://krebsonsecurity.com/2018/07/patch-tuesday-july-2018-edition/#more-44375
Not infrequently, Redmond ships updates that end up causing stability issues for some users, and it doesn’t hurt to wait a day or two before seeing if any major problems are reported with new updates before installing them. Microsoft doesn’t make it easy for Windows 10 users to change this setting, but it is possible. For all other Windows OS users, if you’d rather be alerted to new updates when they’re available so you can choose when to install them, there’s a setting for that in Windows Update.
It’s a good idea to get in the habit of backing up your computer before applying monthly updates from Microsoft. Windows has some built-in tools that can help recover from bad patches, but restoring the system to a backup image taken just before installing updates is often much less hassle and an added piece of mind while you’re sitting there praying for the machine to reboot successfully after patching.
updates re-released on 7/13 didn't have the actual binaries modified so they are not going to be re-released in Patch datafeed.
Additional updates released by Microsoft on 7/16 are included in today's PM Import 7.1.141.
I just pulled 7.3.141 & only see one patch updated 7/16, I'll attach screenshot.
According to this computerworld article, I was expecting most patches to have a newer date (like 7/16) on them.
Possibly more changing in future PMImport?