Keep various installations up to date

Hi, I have several installations done throught autoyast and everithing works fine,but I spend lot of time replicating all configuration variations after installation across different machines,is it possible to use autoyast and generate an autoinst.conf with some variations (for example one more user or something similar ...) and pass it to another autoyast on an other machine and make him write changes on the configuration files (or pass it directly to yast) ? I've read that autoyast use a format compatible with other modules of yast ,so how can I make yast able of reading these configurations from autoyast and use them to change my configuration files ? Is it possible ? even with some hacks .... Thanks in advance regards