Posted by Rallaz on Dec 13, 2013; 8:35am
URL: https://forum.librecad.org/Moving-copying-entities-from-one-layer-to-another-tp5707491p5709275.html

your problem is another...

Read this thread:
http://forum.librecad.org/Block-can-not-be-inserted-on-different-layers-tp5544026.html

In sort:
Edit the "block definition" and change the properties of all the entities to layer 0 & color, linetype & width "byblock"