Seems I can't "unforget" erroneously forgotten files, so will have to forget them and then re-add them
component build_metadata
source \src\tools\dev\build\build_info\build_metadata
source \src\tools\dev\build\package_definition.xml
source \src\tools\dev\build\distribution.policy.s60
notes_source \component_defs\release.src
ipr T