I would open your AC9 template in 11 and save, then open your AC11 template and import the Pen Set from the migrated template via the Attribute Manager.
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004