Clearing out CED between IVRs

[Frierpie]

Hi,

Have 2 IVRs, one after another. For various reason, some customers (small minoriy) when calling the number, try to enter a 4 digit extension (alsways beginning with '4').

On IVR 1, we have made option 4 a 'general option', but has to route to 2nd IVR.

Because customer has entered 4 digit ext, the 2nd IVR then takes the route of the 2nd digit entered.

Anyone know of a way to clear out the CED between the 2 IVRs?

Thanks in advance