You may need to renumber builds for whatever reason, do it simply in App settings!
If you migrate to Bitrise from another CI/CD service, you might already have 199 builds for a project of yours (but the glitch ain't one) and it would have been nice to continue with 200, instead of 1 again. So we've added an option to your app's Settings tab, where you can add a number and that will be your next build's number.
The only limitation is that this number has to be 0+, 0 and negative numbers cannot be set, but you can set any number you've already used. This might cause some confusion, so beware!