[chirp_users] Baofeng UV5R Flashing

I have several UV5R's and am starting to wonder how the flashing algorithm works. This is due to odd behaviors that I "think" I am seeing.

When flashing, is the total memory replaced included in-factory configuration elements?

The reason I ask is that I bought a new unit which was serving for data aok, then after flashing an image (including channels) from another device, it seemed to degrade performance.

The purpose of my question is to clarify whether I need to flash units only with their native image updated with data since factory parameters may be impacted by using another image as a baseline.

Thanks, Don VA7IQ / AE7UP