The same situation with Ancajas because he originally prepared for a title defense fight against Kazuto Ioka but was replaced last minute by Fernando Martinez and Ancajas ultimately lost the title he held for quite a long time. These instances can't be predicted because the original boxer wanted to participate in the fight but an issue surfaced later on which resulted in a need for a substitute just like this time.
Even if there's no sudden replacement, Jerwin Ancajas might probably still lose that supposed original fight.
The reason is very clear and it was stated by his team. Ancajas is not in good shape because of his hard training to catch the required weight. That resulted in him not performing on his usual and Ioka might take that as an advantage.
As I read on some reports, that's the focus now of Ancajas camp as they are really preparing seriously to get a win on a rematch against Martinez.