Just three days before its next event, Invicta Fighting Championships has seen another change to its card. Visa issues will force Canadian fighter Charmaine Tweet (4-3) out of her featherweight fight against Ediane Gomes (10-2) on the main card of Invicta FC 6. Stepping in to face Gomes will be Tamikka Brents (2-0). Promotion officials late Wednesday confirmed a report of the injury from MMARising.com . Invicta FC 6 takes place Saturday at Ameristar Casino Hotel in Kansas City, Mo. The event airs on pay-per-view in North America, and international viewers can watch via an online pay-per-view stream, each for $14.95