The acknowledgment by any insurer of the receipt of notice given under any policy covered by Articles 49, 50 through 55, 65, or 67 of this Chapter, or the furnishing of forms for filing proofs of loss, or the acceptance of such proofs, or the investigation of any claim under the policy, shall not operate as a waiver of any of the rights of the insurer in defense of any claim arising under the policy. (1913, c. 91, s. 7; C.S., s. 6484; 1991, c. 720, s. 28; 1999-244, s. 10; 2000-140, s. 16.)