I just checked with the three brand new Atec Wave mods we have on the shelf here. I've not seen one of these apart, so don't honestly know the make up of the baffle arrangement, but each of then seems to have a 'split' baffle - similar to that shown in your picture. Its not breakage and certainly part of the design.
Been a long weekend and brain not firing on all cylinders, but it looks like there is some form of 'spiral' baffle stack arrangement in there, not a series of solid baffles like washers etc.
Looking at your picture with no frame of reference, it does look 'broken', but with the benefit of a pristine baffle ( times 3 ) to look at - it certainly seems to be part of the design and looks far more 'made' in new form than the picture above - where the fouling does make it look like a single solid baffle with a split.
Key question - any using issues with it? Is it spraying rounds all over the target, making a strange noise or unduly loud?
SAK - no new one to hand. But two with many thousands of rounds through - too cagged to really see much of anything! From memory - years back I took one apart just to see the gubbins - it has a one piece machined aluminum baffle arrangement. Nothing really to break. What you see is very likely a machining mark. But if concerned, then a call to Jacksons will most likely resolve things. I'd suggest that rather than the dealer as - with respect all round - they may have no better idea than Sd members!
( joking guys!!!!!! )
From the info provided, my inclination is that you'll find all is well with both mods. Hope that helps.