Reewrite conditions are not migrated as :migrate operation currently marks them as resources, which is not able to migrate see migration warning [].

In Undertow it is possible to create equivalent configuration by using filters (predicate attributes and handlers, see http://undertow.io/undertow-docs/undertow-docs-1.2.0/index.html#predicates-attributes-and-handlers).

I thus believe that rewrite conditions from Web should be also automatically migrated to Undertow via :migrate management operation.

[1]

    "result" => {"migration-warnings" => [
        "WFLYWEB0002: Could not migrate resource {
    \"pattern\" => \"(.*)/toberewritten/(.*)\",
    \"substitution\" => \"$1/rewritten/$2\",
    \"flags\" => \"NC\",
    \"operation\" => \"add\",
    \"address\" => [
        (\"subsystem\" => \"web\"),
        (\"virtual-server\" => \"default\"),
        (\"rewrite\" => \"test\")
    ]