Sorry I wasn´t clear.
Often I use many MXS references in my projects in order to improve the viewport speed (I have made own xpresso setup in a noob way

so when you duplicate it many times the viewport gets jammed) and sometimes I have to go back to the original file to make some little modifications and re export the file(s) as a MXS again.
Now after saving the file(s) again I go back to my main project and I have to relink the MXS in order to get the object(s) updated, so I was thinking that a simple reload button in the MXS reference object would save some clicks or even using an automatic update.
Hope I explain myself better this time.
C4D R10.1
Cheers
JC