Switching between CAD files used to mean hunting through a flat list of file names. The CAD viewer now organizes drawings by building level and tracks version history per file — the same way the BIM viewer already works.
Finding the right floor plan is now level-first. Open the CAD tab for any location and you'll see a level selector instead of a raw file list. Pick a floor — or switch between Floor Plan and RCP — and the viewer loads the drawing assigned to that level. Locations where files haven't been assigned to a level fall back to the previous file-name selector, so nothing breaks for older uploads.
Version history works the same way it does in BIM. Next to each file, a version selector shows the full upload history for that drawing. Each version carries the same product-based verification labels you already see on BIM deliverables, so you can confirm at a glance whether a version passed QA. Clicking an earlier version loads it in place without leaving the viewer.
Uploading a new version links automatically to the original file. When you add a new version through Add Version, the replacement inherits the parent file's level assignment, building, and category. You don't need to re-tag the drawing after upload — it appears in the right level slot and slots into the version history of the file it replaces.
The CAD tab badge now reflects only viewable files. The count shown on the CAD tab previously included ZIP packages that can't be opened in the viewer. It now counts only DWG and DXF files, and deduplicates by file identity so versioned uploads don't inflate the number. What you see in the badge matches what you can actually open.