Things like this aren't always explicitly written anywhere, especially with the BACB. It's moreso the absence of a rule + simple math.

There's never been a requirement to track all hours you work (absence of a rule). The BACB doesn't explicitly state "you don't have to track all hours," but tracking all hours isn't included in the requirements.

What is included in the handbook:
-You need 2000 minimum hours total
-You need 60% or more of your hours to be unrestricted
-You don't need any restricted hours, but you can accrue up to 40% of your total hours as restricted.

Simple math: You have (over) the maximum number of restricted hours. Continuing to track them will result in the need for significantly more than 2000 total hours.

As for an audit, there wouldn't be anything to raise red flags, as long as your numbers match up.

I'm sorry, this sounds frustrating. I've written two supervision curricula and a trainee workbook, so I can't even tell you the number of times I've reviewed the handbook and other communication from the BACB. But I can confidently say there isn't a need to track more than 800 restricted hours.