Microsoft LAPS / Schema Update

     If the Microsoft LAPS addition has already been added the our 2008 R2 Domain (Operating System is 2008 R2, DC 'schema' is 2008 R2 and forest is 2008 R2) is there a cause for concern that should be taken in to consideration before doing a Schema Update to 2012 R2 or will the new fields/permissions automatically migrate with the Schema Update?  If there is any concern at all what steps should be taken before, during, or after to the 2012 R2 Schema Update.

Thanks in advance for your time.

FYI, the DC Operating System will also be upgraded to 2012 R2 before the Schema Update.