"backwards" door lock

[LL - NY]

patient, friend's '93 100CSQA

symptoms - post door latch mechanism in the door was replaced by a tech, now
mechanically the lock operates as original, but the alarm/power lock
operate opposite the mechanical lock, i.e. - turn key to left to power
lock the car, BUT, must turn key to right to physically lock the door.

To unlock, must turn key to right to disarm the alarm/power lock, BUT
turn key to left (as normal) to actually get the plunger to rise so
that one can open the door.

Failure to do so brings great embarassment when the alarm goes off or
the car won't start, then when you exit the car, the alarm goes off.
At least the alarm/security system has been verified to work
correctly.

Any ideas?

TIA,

LL - NY - non-scitzo 95.5  //S6, '89 200Q