Fix tracing existing entries when there are deletes

[Fokko]

Resolves #1044

cc @sungwy I'm afraid that we also want to include this in 0.7.1 :(

[sungwy]

cc @sungwy I'm afraid that we also want to include this in 0.7.1 :(

No worries @Fokko - this was such a large release, and I'm quite glad that all these issues are being reported as soon as we went live with the minor release :) It's creating a great opportunity for us to vamp up our test suite.

I've just canceled the VOTE so that this fix can be included with this patch release.

[Fokko]

@sungwy Thanks for the quick follow-up, appreciate it 👍