JBoss EAP 6.4 Update 20 (or later) requires 6.4 Update 19 to be applied first

JBoss EAP 6.4 Updates 10 through 19 included updates the previous updates starting at 10, which increased the download size. To alleviate the large download size, JBoss EAP 6.4 Update 20 will only include Update 20 and requires you apply Update 19 before applying 20. And if your current update level is les...