I've just updated vCenter from 6.5 to 6.7 U2.  I then attempted to update our Dell R730 ESX hosts from 6.5 to 6.7 U2 using the following package provided by Dell:

Version: 6.7 U2 ,A01
Last Updated Date: 21 Jun 2019
File Name: VMware-VMvisor-Installer-6.7.0.update02-13644319.x86_64-DellEMC_Customized-A01.iso
File size: 316.13 MB
Description: This is DellEMC Customized Image of VMware ESXi 6.7 U2 DellEMC Version: A01, Build# 13644319

When I import the ISO, create a baseline, attach it to a host, then check compliance, I am warned that the baseline is incompatible.  Does anybody know why this might be the case?  I thought I've read in my travels that there are issues updating hosts with custom images via vCenter, but would appreciate confirmation if this is truly the case.  Thanks in advance!