Posted by Gary S on Apr 23, 2021; 2:46pm
URL: https://forum.librecad.org/import-several-dxf-tiles-at-the-same-time-tp5720601p5720607.html

If you are using the LC 2.2.0 branch, yes.  Multiple layers can be selected by using [Ctrl]-[Left Click] to select non-contiguous layers or [Shift]-[Left Click] to select contiguous layers, and then click the layer delete button.  If you are using an older version, then no...

Another suggestion that may help you - Select all entities in a drawing with [Ctrl]-[A] and then use Tools->Modify->Attributes and change the Layer to "layer 0".  It is a little simpler than using C&P...