Tennessee Code Title 28. Limitation of Actions § 28-1-114

(a) A counterclaim or third party complaint or cross-claim is not barred by the applicable statute of limitations or any statutory limitation of time, however characterized, if it was not barred at the time the claims asserted in the complaint were interposed.

(b) If a nonsuit is taken as to the original civil action, any counterclaim, cross-claim or third party complaint arising from such action shall not be terminated but may proceed as an original civil action. However, if a counterclaim, cross-claim or third party complaint is filed as a civil action as permitted by this subsection (b) and such action does not proceed to an adjudication on the merits of such claim, the defendant shall have the right to file a counterclaim, cross-claim or third party complaint within the time allowed for the filing of a responsive pleading only if the original action is reinstituted pursuant to § 28-1-105.

(c) Any counterclaim, cross-claim, or third party complaint arising from an action or suit originally commenced in general sessions court and subsequently recommenced as an original action or as a counterclaim, cross-claim or third party complaint pursuant to this section in circuit or chancery court according to the provisions of § 28-1-105, shall not be subject to the monetary jurisdictional limit originally imposed in general sessions court.