Yes, but lets hope they wont be too much trouble in the future haha. i am getting some mischling shrimp next week. those should be easier to keep/breed.
The only time i have encountered issues with my SSS so far is when i plant the aquarium. it absolutely cannot be done because upsetting the substrate messes up the fragile shrimp.
luckily i dont have to plant anything new, so i shouldn't lose any more shrimp.