Automatic Update Instance Property

Hi everyone

I met a problem when trying to replace my circuit with a different process. Firstly, I use the "Replace" function to replace the process library. The cellviews of the MOSFET seems to be changed to the target library and the Width/Length/Fingers are kept unchanged. However the simulation result shows that the "replaced cellviews" is different from a new inserted cellviews.

The difference is because the "replaced cellviews" kept the width/length/fingers, but the parasitic parameter or some automatically calculated parameters(like the size of the Wells)are not updated. So the WPE/LOD effect will affect the Threshold voltage. So I observe some performance shift after the replacement.

After that I find the parasitic and automatically calculated parameters can be updated. If I click "Q"  after I selected one of the "replaced cellviews" and changed any of its property, like width, length or instance name, the instance will update its parameters and the simulation agree with the newly inserted instance.

So I do have a solution by manually updated all the instances, but I find it to be time consuming and highly risk(it's very likely to fill in the wrong number for your instance). 

My question is, is there any way to update the instance of my circuit automatically by using some embedded funtions or skill script?

Thanks !

B.R