The refactoring can be done when fixing overflowing pages as part of changing document settings is converted to a document Action.

Algorithm loop outline

• For each page of same kind, compute (cards_on_page - page_capacity)
  • Take excess from the end, split it into (excess_cards // page_capacity) chunks.
    • Place each chunk with length page_capacity on a new page, filling it completely
    • Take the rest and insert it at the beginning of the next original, compatible page

Implemented. Algorithm differs from the proposed one, as that still allowed re-ordering between regular and oversized pages.

The implemented algorithm skips leading empty pages, and then partitions the pages into chunks of (oversized and empty) pages, and (regular and empty) pages, and then re-flows each individual chunk.