Hello Annie,
A few options for you in case you are still uncertain about the OSS Notes:
1.- Try to implement the notes in a Sand box, that way you will be able to test them with no harm at all to your real system or..
2.- Make a backup of your system before you implement the Notes, that way you will get a returning point in case of any misfunction caused by them
3.- Even though the system is capable of apply the second note automatically, you might feel a bit safer if you implement them one at a time, that is you implement the note 1880783 and check if there is no harm to your system, then you implement the note 1855437. If you decide to apply the notes this way, use the same Transport Order for both notes is a good idea.
A final reminder, don't forget to execute the manual steps included in the PDF file of note 1855437 
Best regards,
Oscar Morrison.