Hitachi Content Platform​

I'm using the MAPI to download logs from HCP. The way I understand it from the docs, the process is this:

1. Issue a logPrepare REST call specifying the dates you want (and some other optional stuff)
2. Periodically issue a logStatus REST call to check if the logs are ready
3. Issue a logDownload request, specifying the types of logs you want among other stuff

This all works fine the first time. Now I need logs from different dates. Issuing a logPrepare call again is met with a

"400-Bad Request-There is already a download in progress".

So how can I get rid of the first logs so that I can "prepare" new ones?