Replacing old project

Replacing old project

Hello,
Recently i had to upgrade a certain project. i got a backup copy of the costumer PC. and did my upgrades on a different PC . after that i created a backup of my new upgraded project so i can deploy it on the customer PC.
how can i replace the old existing project on the customer PC without deleting any old archive?
another question is regarding the messaging system. In WinCC there is a certain place that is dedicated to write all the messages and to assign the bit variable to it, it makes working with messages and alarms easier .
In zenon the only way that i found is thru the variable list so i have to assign a name for every message and include a limit so i can get my alarm,
Is there any other way?
best regards.

This is a migrated post! Originally posted on 22.05.2009 by user ziadrached. Please be aware that information can be outdated.

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