(a) If under section 8-801 a member's dissociation from a limited liability company results in a dissolution and winding up of the company's business, article eight of this chapter applies. If a member's dissociation from the company does not result in a dissolution and winding up of the company's business under section 8-801:
(1) In an at-will company, the company must cause the dissociated member's distributional interest to be purchased under article seven of this chapter; and