Have you tried the Discourse Sitemap?
Seems like you do not have many active members engaging in the threads on your site. You have to give it some time and try to get some of your members to help promote your forum. Encourage your members to start threads. This is just an outside observation, based on the reply counts. Dont worry so much about google, keep your site moving with interesting and engaging content. Hope this helps. Good luck.
Yes, it’s running in production now.
I see. And even though the whole hundreds of thousands of topics are in the sitemap, Google’s only looking at 10K of those per day? (My understanding of how this stuff works is entirely theoretical.)
It would seem like there’d be a way to tell search engines that it’s the same data and that 301s would be that way, or that you could create a sitemap that passed all of the 301s en masse.
Here is a chart from google webmaster crawl stats:
My interpretation is that Google noticed that something was off on that domain, and a few days after the migration it crawled a massive amount of pages (160k, the peak on Sep 11 --migration was Sep 6). After that, it kept on crawling at higher rates than before.
There are no other obvious signs for Google to drop our ranking so dramatically.
Engagement on the forum hasn’t changed since the migration (actually, it has improved slightly since the migration). Of course we have margins to grow there but this discussion is specifically about SEO after a migration from an old platform.
Possibly something on this thread can help you? There are also some good links with even more info.
One of the important reasons is that the weight of each page has changed. It changes not only because the structure of the page has changed, but also for a number of reasons. For example:
1. Internal linking became different.
2. External sites link to other pages.
Against the background of other, general changes, this has led to your results.
If you still want (but I do not advise) to promote the site (at your own peril and risk), then it is necessary.
1. Determine which sites link to you, which pages, which anchor in the links.
2. Look at the addresses of links and anchors.
In no case should you change old links to new addresses and anchors. But you can try to add new links to the internal pages of the site.
Search engine algorithms are complex and interdependent items. We, for example, back in 2006 wrote more than 1,000 terms.
To guess, not knowing exact dependence, does not make sense. But the general recommendations written above can help. Just do not change the anchor and addresses of old links on other sites.
Continue adding weight not only to the central page but also to the internal pages of the site by linking to external sites, always taking into account the subject matter of the sites. And take care of the activity on the site.
The site has changed, if activity has also fallen, then this is another sign that the search can find that people did not like the site after the changes. This is not true. But the algorithm only looks at the data. He needs time.
Try to do, say, on one of your pages that is written above.
Wrote with Google Translator
사이트가 아직 운영 중인 것 같네요. 요즘 수치는 어떻게 나오고 있나요? 지난 2년 동안 꽤 많은 변화를 거쳤거든요.
저는 더 이상 그 사이트를 관리하지 않아서 잘 모르겠네요. 죄송합니다. 전 동료들에게 연락해서 이 질문에 답할 수 있는지 물어보겠습니다.
안녕하세요!
흥미로운 토론입니다.
2주 전에 게시글이 30만 개 있는 2007년 버전의 phpBB를 Discourse로 이전했습니다.
웹사이트 URL이 http://www.vw-camper.fr에서 https://vw-camper.fr로 변경되었으며, www에서 서브도메인 없는 주소로 적절한 리다이렉트가 설정되어 있습니다.
또한, 마이그레이션 스크립트가 기존 링크에서 새 링크로 301 리다이렉트를 올바르게 설정했습니다.
여러 사용자들이 Google에서 "vw camper"를 검색해도 더 이상 상위 결과에 사이트가 표시되지 않는다고 불만을 제기하고 있으며, 심지어 1페이지에도 나오지 않습니다.
또한, 기묘한 일이 하나 있습니다… 매우 중요하지는 않지만, 그저 궁금해서 물어봅니다. Google에서 "vw camper.fr"와 관련된 문자열을 입력했을 때 한 사용자가 보고한 내용이 다음과 같습니다:
이것은 이전 웹사이트의 설명이지만… 이 추악한 URL은 무엇일까요?
http://www.vw-camper.frwww.vw-camper.fr 
단순한 버그라고 생각됩니다?
2022년 마이그레이션 이후에도 여전히 유효한 정보인가요? 포럼이 이전 SEO 랭킹을 회복할 때까지 몇 개월만 기다리면 되는 것일까요?
www.vw-camper.fr에서 vw-camper.fr로 설정된 301 리다이렉트가 일시적으로 잘못 설정되어, 301 리다이렉트가 해당 URL로 보낸 것이 아닐까요? 제 추측으로는 이런 이유일 것 같고, 여러 상황을 설명할 수 있을 것 같습니다.
