installing new keupad for Ademco security system

[goldenbulldog_at_gmx_dot_ch@xxxxxxx (goldenbulldog)]

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 < _________\______)\__)

I have to replace a 6127 Keypad with a newer one - ademco 6148. If I power
down the system by unplugging the power source and disconnecting the
battery, can I simply replace the keyboard without having to reprogram
everything?

Your experienced suggestions are needed before I screw things up.