Testing update wants to replace network-manager - will it be seamless?

[Patrick Wiseman <pwiseman@gmail.com>]

Hello:

I can't afford to lose network access just at the moment, so should I
wait to do today's update on my testing system (amd64)?  I've
previously had troubles with network-manager but it's been working OK
lately.  Will the update, so far as anyone knows, preserve settings,
etc.?  Thanks for any guidance.

Patrick