Unwanted highlighting after cross-buffer paste

[kj]

When I do a cross-buffer cut-and-paste from a buffer with syntax
highlighting to one that doesn't have any highlighting I find that
the highlighting from the source buffer is preserved, which I don't
want.

I have not been able to find a way to get rid of this "imported"
highlighting, other than killing the buffer and revisiting the
file, which is pretty annoying.  E.g. "M-x fundamental-mode" won't
do it.

Is there a simpler way of getting rid of this unwanted highlighting
(or of avoiding it in the first place)?

TIA!

Kynn
-- 
NOTE: In my address everything before the first period is backwards;
and the last period, and everything after it, should be discarded.