The attached image is of problem encountered in Autocad where if we
paste a block from one drg to another it take a lot of time even if
the object being pasted is small.
Please see the red circle in the Command line of Autocad image attached. The
real problem that the object gets replaced on a particular block
everytime something is pasted from one dwg file to another.
Thanks & Regards.
Mohan Suryawanshi
There is nothing wrong, that's how AutoCAD works, the program is telling you you have those items in the file and the block version is being ignored. This is basic AutoCAD behavior, the file you are in governs over anything you bring in.
Rename those blocks to something else in your block, or in your file, RENAME command, but realize what it is you are doing before embarking on it.