If it won’t do it with the background, maybe use & signs instead.
So, your script would look something like:
INT. INTRO
&overlay INTRO_WORD create
&overlay INTRO_WORD opacity 1
&overlay INTRO_WORD shifts to 4 580
&overlay INTRO_WORD scales to 0.557
@pause for 2
@overlay INTRO_WORD shifts to 4 72 in 2
Let me know if this works 