During preparation of isolation drawings quite often we need to change multiple text/ numbers in mark ups after using the Search facility. Search and Replace function in Bluebeam is not working on 'Markups' (able to search but can't replace). When I contacted the BB support, they suggested to flatten the mark ups and change as required. But after changing I could not 'Unflatten' using the command. Please do the needful to provide 'Search & Replace' for the text/ numbers in Markups. This will save lot of time when text in several pages to be replaced.