Thanks for the suggestion, unfortunately that document only applies to SFM, not Central Firewall Manager, there is no option to configure iView in CFM. I had found another document that details setting up iView and SFM, however, it directs you to do exactly what I did, configure all XG firewalls to use the iView server as a syslog server from SFM which is exactly what broke all of my connections. Interestingly when I remoted into the devices to configure central management for HTTPS I found many of them did NOT have my iView entry in Logging. I will try rebooting a device that lost contact with CFM and see if it connects again without configuring for HTTPS.
It very well may be a bug, here is what I found with the last one I worked on. This one had received the settings from CFM for the iView server. I went into the Central Management page and changed from Syslog (recommended) to HTTPS. Almost immediately it began communicating with both the CFM AND iView. Here is the real kicker, I'm using port 514 for iView and 6514 for CFM. I could sort of understand if they were sharing ports but they are not. It appears that the latest firmware for the XG (at least on the 85 series) cannot handle two logging servers at once.