Sometimes parts that have custom styles (in this case the part named "Service Module interstage" id 920) update their value when reloading the craft.
The style should be style="Inlet-1" and after reloading the craft it's style="Default". It happens once every (aprox) 10 reloads of the craft and with different parts.
@NathanMikeska btw, you may like to know that this works for any part with styles. Something that I use a lot is typing random strings in the tire styles, this way you can make them have only the pneumatic or only the rim.
A fun fact: I think that when you use a random string for the style it gets added to the Part styles list, because after using it once I can access that style from any craft just using the editor style menu