You have a Cadence Allegro PCB design (schematic and layout, also gerber postprocess)? Now another team wants to modify the design in a different layout tool and is requesting you to generate design files for their tool?
That makes no sense at all. Porting a design to a different tool always involves loss of information and requires manual rework. Modifications of an existing design should be preferably made in the original tool chain. As already mentioned by BigBoss, smaller modifications can be also made with a gerber tool.