I get what you're saying. I was considering training on just the new data to see how it works. To me it felt like that was the fastest way to deal with data drift. I understand that it may introduce instability however. I was curious how other developers who have successfully managed to set up continuous training deal with it. 100% new data, or a ratio between new and old data. And if it is the latter, what should be the case, which should be the majority, old data or new data?