After days of confusion and frustration, it appears that Nick Diaz (Pictures) will be fighting Sunday in Japan after all.

"It was off, then on, then off again … now it's back on," said Diaz's trainer, Cesar Gracie (Pictures). "I won't really believe it until he is on the plane tomorrow morning heading to Japan."

Diaz will spend his last few hours in the United States cutting weight before heading to Japan to face former King of Pancrase Katsuya Inoue (Pictures) in Dream.

"Tonight we will be pulling an all-nighter cutting weight," Gracie said late Wednesday. "Nick was under the impression he wasn't fighting. So now we have to get the weight back down before he leaves."

At one time Diaz was set to compete on Dream's April 29 card, a date Gracie said was approved by EliteXC. However, Diaz's participation became uncertain after promoter Fight Entertainment Group moved the date of his bout to Sunday.

EliteXC President Gary Shaw originally pulled Diaz from this weekend's card because the contest was said to be too close to the June 14 EliteXC match between Diaz and Muhsin Corbbrey (Pictures) in Hawaii.

Gracie stated that ProElite CEO Doug DeLuca was to thank for making the Diaz-Inoue bout happen.

"He thought Nick sort of got screwed with the whole California Athletic Commission thing," Gracie said, referencing the California commission's removal of Diaz from a March matchup against Jae Suk Lim (Pictures).