Are you looking to upgrade from LiveCycle ES4 SP1 to AEM 6.3 Forms? Now, a direct LiveCycle to AEM Forms upgrade path is available. You don’t have to upgrade to an intermediate version before upgrading to AEM 6.3 Forms.
To help you upgrade from LiveCycle ES4 SP1 to AEM 6.3 Forms, we have put together a set of documents. These documents help you understand the upgrade process, the prerequisite checks to decide the best migration path, and provide detailed steps to perform an upgrade.
There is a separate upgrade document for each supported application server (JBoss, Oracle WebLogic, IBM WebSphere) and JBoss Turnkey installations. For details, see Upgrade to AEM 6.3 Forms. And, do let us know your feedback.