Non global change log parameters are wrongly resolved in inner files

root.xml
-a.xml
-b.xml

in 'a' and in 'b' files we define a non global property with key 'akey' and different values. root is passed to liquibase. include order is 1.a, 2.b. When b is processed null is returned at ChangeLogParameters:165 because of

if (changeLogParameter.getChangeLog() == changeLog) {
result = changeLogParameter;
}