Ignoring or avoiding "x" propagtaion for ams simulation for certain signals and/or instances due to connect module definitions

Hi,

  When running an ams simulation.  I know one can remove the "x" propagation due to timing checks with standard cells by using the -tcheck or -timing option.  I think I've learned that this only stops x propgation for setup and hold time violations which works fine any time I have signals that are truly asynchronouos Data or Resets going into a flip flop where if I have a setup and hold issue I ignore the timing viloation and allow what would cause an x propagation at the Q line (if CLock and data don't have enough setup and or hold time, or a reset to a flop comes at the same time the clock does) to what I'm guessing preserves its last state.  However I learned X propagation due to slow "slewing signals" are caused by connect module definitions and can not be ignored using the -tcheck or -timing options. Is there a way to no allow X propagation for certain instances that occur during these slow slewinging conditions and/or startup? 

Example being an RC going into a logic gate if the net is slewing slower than the connect module definitions it will propagate an X until the slewing net crosses some defined threshold, to avoid this I normally just make any logic gate that I know has a slow slewing net a schematic, but it would be much easier if I had some common instance name where I can use some wild card to remove this for all cells exhibiting this behavior i.e.

if I have multiple logic gates that have slow slewing inputs with an instance name with a prefix ISLOWSLEW_instanceN  I can create a file with some sort of wild card defintiion that has a statement as below:

TB.CELLTOP.*ISLOWSLEW*   -turn off X propagation  where this will not allow an X propagation for any instances that are within a testbench called TB in all levels of hierarchy inside CELLTOP that have "ISLOWSLEW" in its instance name.  

An analogy for timing checks for standard cells I would use the following:

TB.CELLTOP... -tcheck this would turn off all timing checks for cells within CELLTOP and any level of hierarhy. 

I don't want to change the connect module definitions because I would only like to change them for the cells I know whose states are only being "undefined" during that moment of time because the signals driving them may be filtered.

I am using virtuoso version 6.1.7 with AMS irun (not sure what version).

Thanks