Change the calendar in MTL_PARAMETERS screen in inventory « Locked

We have 2 inventory orgs with different Operating Units, which has using different Calendars for the respective inventory org.

Now the customer wants to use the inventory calendar of one of the orgs in the others orgs calendar.

Ex ABC inventory has ABC Calendar in operating unit OU1.

     XYZ inventory has XYZ Calendar in Operating unit OU2

Now Customer wants ABC inventory Calendar to be changed to XYZ Calendar.

This we are able to do in MTL_PARAMETERS Screen.

Our only concern is that, what is impact on this change.(Note:We are using BOM Module)