When a script with alt dialogue is printed or saved as PDF, only the alts that are currently visible on the page will be included in the output.
To create a version that has all alts on the page, go to Tools > Reports > Scene Report and select all of the Script Elements (but not necessarily the Outline elements). Be sure to check the box for Include Alt Dialogue:
The resulting document will have all alts included and numbered:
The Script Report header can be deleted -- Document > Header and Footer.
NOTE that because there is more dialogue in this version of the script, its page count will not match that of the master file.