There should be an option to merge layers and all the elements should automatically go to that layer. (So we don't have to deal with thousands of layers from the engineers)
ArchiCAD 26 MacOS Monterey MacBook Pro Apple M1 Max 64 GB
In addition,
that dialogue only pops up if your deleting
layers from the "Layer Settings" window.
You won't see it if your deleting layers in "Attribute Manager".
Marc Corney, Architect Red Canoe Architecture, P. A.
Mac OS 10.15.7 (Catalina) Processor: 3.6 GHz 8-Core Intel Core i9 Memory: 48 GB 2667 MHz DDR4 Graphics: Radeon Pro 580X 8GB ArchiCAD 25 (5010 USA Full)