These are due to changing string literal representation, omitting empty annotations blocks, and changes to how annotation classes are represented in the database.
These occur because the Companion field is odd, being extracted from source but not having an associated FieldDeclaration, leading to PrintAst enumerating the node differently depending on whether it has a source-file location or not but in either case choosing not to show it.
Java's regular strings are formatted as they appear in source, but we don't easily have this information available in Kotlin. During annotation extraction however it guesses a source rendering because the source is not necessarily available. By formatting to match the annotation extractor, we prepare to ensure consistency with a Java database
when extracting annotations as seen by Kotlin.