Sys properties are fetched directly through metaProperty.getName() [EntityRestore.java line:142-143]
This gives attribute name, it should be localized and taken from StandardEntity metaclass properties to get localized property .[DeleteTs, CreateTs,… localization is defined for StandardEntity]
Maybe something like this:
MetaClass standardEntityMetaClass = AppBeans.get(Metadata.class).getExtendedEntities().getEffectiveMetaClass(StandardEntity.class); column.setCaption(getPropertyCaption(standardEntityMetaClass , metaProperty));
But maybe it can be fetched even from current entity metaclass