Thank you for your honest feedback Nicholas.
If you watch this topic, it will be updated when a new version is released.
Thanks dyelton, It can depend on your configuration too, if you've selected to index forums that only have so many posts in, it might not reach the 50,000 limit.
[*]This is something that I hope to address in the next version, we will be able to process X records per load instead of 50k.
[*]Obviously if the topics are not in the latest 50k they won't be included in the sitemap, as above though something that will be included in the next version.
[*]Possibly, it depends on the logic though, finding out if its already been put in a sitemap, which sitemap it's in. In some cases it is far easier and less resource intensive to regenerate the entire file.