After upgrading the BOINC client to 7.6.3 on Windows, my tasks were all abandoned and showed "no data available to compute."
I am a little frustrated and the 17 abandoned tasks showing up on the account is not helping so how do I delete that from the account?

Unfortunately, those models will sit there until they time out - which will be a long time. It is annoying when that kind of thing happens, but if it’s any consolation it doesn’t matter too much to the project as the ensembles are large. The current batches are many thousands of models.

How do the credit system work for the abandoned projects?
Do I get credited for the work I did before the boinc client aborted the computation?

You get credited for the "trickles" that are uploaded at intervals for each task. If you have trickles listed on a task webpage, you will get a certain amount of credit for each trickle. Since the credit script is only run about once a week, you don't see credit immediately after an upload.

It's either the default network setting interfered with the trickle or I updated the client before the first trickle point because it shows "No Trickles!"
It seems I won't be getting any credit after 11852 seconds of computation.
It was great while it lasted.

LTEX -

In my opinion, 11852 seconds is a little like a drop of water in the ocean - too small to worry about.

On "cleaning up your account" - I have found if you delete the project from your computer, wait 10 minutes, and add it back in, all of your outstanding tasks will be labeled as "abandoned". Of course, you would do that if you had no real tasks on your computer.

If the tasks have already been "abandoned", there is nothing really you can do or be concerned about.

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