Yes, that is correct. The 7835 folded link (which, to my knowledge has not been reproduced or replicated) also needs to be expanded to add or remove links. Because of the way the links are folded they have to be unrolled- A rather difficult task in it's own right, so it's better to let a competent watchmaker handle the job.
What are you putting this bracelet on? A DW? If so, the s/n is probably around 2952---, which dates it to around 1970/1971. In this case, a folded link would be correct, but it wouldn't be unheard of to see a 78350 on the watch as a replacement bracelet...
However, if you are after a bracelet that can be easily adjusted, a 78350 heavy link is probably your best bet.