What is the best way to upgrade from the 5.2.1264 to the latest 5.3.109 ?
Can I use the latest WebSDK (2.0.259) against the 5.2 and than upgrade to 5.3 ? does 2.0.259 works against both versions ?
is there anything deprecated between 5.2 to 5.3 that might break my site ?
do I need to set...