I thought you might be interested in looking at How to search and replace walls that do not have a type..
https://forums.bohemia.net/forums/topic/231232-how-to-search-and-replace-walls-that-do-not-have-a-type/?do=findComment&comment=3420668
× Pasted as rich text. Restore formatting
Only 75 emoji are allowed.
× Your link has been automatically embedded. Display as a link instead
× Your previous content has been restored. Clear editor
× You cannot paste images directly. Upload or insert images from URL.