This totally makes sense.
Bellevue Square may be getting rid of Z'Tejas, but it's keeping the southwest flavor alive. Announcing on its Facebook page, Cactus says that they'll be taking over the spot in June. That makes five Cactus locations total.
Also via Facebook, Cactus revealed why they never moved into Issaquah, as previously expected:
We really wanted to be in Issaquah but never did find a suitable location (we looked for years). We hope that our Issaquah guests will find Bellevue at least more accessible and convenient than Kirkland.
Marc Chatalas, who co-founded Cactus with brother Bret in 1990, tells Nosh Pit that the new location will be the company's largest yet—about twice the size of its Kirkland sibling.