Currently our application is on AEM 6.4 version.
Some of our code and content is present /etc folder.
For e.g.:
Clientlibs in /etc/clientlibs and i18n dictionaries in /etc/designs/../dictionaries.
Do we need to migrate this clientlibs and dictionaries to /apps/ folder while upgrading for AEM 6.4 to AEMaaCS? Is it mandatory?