Indicate MixHash -> Bag(Hash) coersion loses negative weights

Author: zoffixznet

doc/Type/MixHash.pod6

@@ -88,7 +88,7 @@ Defined as:
 
 Coerces the C<MixHash> to a L«C<Bag>|/type/Bag». The weights are convert to L«C<Int>|/type/Int»,
 which means the number of keys in the resulting C<Bag> can be fewer than in the
-original C<MixHash>, if any of the weights truncate to zero.
+original C<MixHash>, if any of the weights are negative or truncate to zero.
 
 =head2 method BagHash
 
@@ -98,7 +98,7 @@ Defined as:
 
 Coerces the C<MixHash> to a L«C<BagHash>|/type/BagHash». The weights are convert to L«C<Int>|/type/Int»,
 which means the number of keys in the resulting C<BagHash> can be fewer than in the
-original C<MixHash>, if any of the weights truncate to zero.
+original C<MixHash>, if any of the weights are negative or truncate to zero.
 
 =head1 See Also