I am migrating a JAX-RS application from WebSphere 8.0 to WebSphere Liberty 8.5.5.
In WebSphere 8.0, Jackson was provided by WebSphere. I can find jackson-core
jackson-core
Alexey, have you tried a parentLast loader approach to the application deployed on liberty so that application classes can take precedence. You can reference this question to get more insights. There is documentation for that from IBM as well here