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#ask-questions
Title
# ask-questions
c

careful-controller-13102

08/30/2023, 9:32 AM
Hello, i've created a feature flag with an A/B testing experiment. Halfway through, i realised i want to split my experiment via
invoiceId
instead of the predefined
id
. But i realised there isn't a way to change the split? I can only create a new experiment and put a new split on it instead (refer to image 2).
w

white-fireman-22476

08/30/2023, 11:09 AM
Correct once an experiment is running you can't change the split. As the split id is what is used for the hash, changing it will cause re-bucketing. Starting a new experiment is the only way forward but it will also mean different buckets for your users. So many of your users will see different things from what they did before, which might confuse them and possibly bias your results..
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