I have an update 
You’ve hopefully seen the latest updates to Trends, with the launch of Targets earlier this month (context if you haven’t).
We had lots of feedback from early testers that Flex wasn’t interacting with Targets well, and it was actually making budgeting harder than before. So we recategorised Flex repayments to transfers so that Trends works as intended.
We’re now working towards making Flex its own account in Trends. This will give you all the visibility you previously had including categorisation, and full control over whether you want Flex included in targets or not.I don’t have a date for when Flex will be in Trends just yet. But we’re working on it.
You can go back and recategorise your Flex repayments if you want - but I appreciate that’s going to be a fair bit of admin. If you can, I’d suggest leaving it as it is until we launch Flex Account in Trends.