I know this thread is very old. I've used the external Sitemap AddOn (with all pages of threads) for a long time. I've switched to use the internal sitemap create almost 2 years ago (February 2016). Around that time, i also changed a lot in my navigation.
I've around 65% of traffic in 3 weeks. I paniced and i've undone all the changes (except sitemap cause i've never ever thought this could have caused the problem cause i've thought the internal sitemap create works same as the AddOn) but nothing changed. In december 2016 (still very concerned about the lost traffic) i've stumbled around the sitemap and realized that the new sitemap includes way less URLs then the old sitemap from the backup. I disabled the internal sitemap creation and used the AddOn again. My traffic went up within weeks.
View attachment 167624
Screenshot of searchmetrics SEO visibility of that timeframe
Why am i posting this now? I would like to get rid of the AddOn. Less Addons are better, specially when you have the same functions build in. I would like to include a lot of other pages of AddOns in the sitemap (like Showcase,...) but that's not possible with the external AddOn. At least not for me.
So please consider adding the option to include all pages of a thread (and maybe also forum). In the meantime, maybe there is a developer out there who could create a custom modification for the XF1 sitemap for me.
This is SOO important for me!