Hi Raoul,
We described in details the process for moving to Joomla 4 in our blog post of august of 2021 about Joomla 4, and we've published regular updates to that in our subscribers' newsletter so I encourage you to follow both to get all the latest news on that topic.
Please refer to that blog but the short story is:
- A new, smaller extension called 4SEF will handle SEF URLs with the goal of being as backward compatible as possible to sh404SEF SEF URLs. 4SEF can import custom URLs from sh404SEF. 4SEF does only SEF URLs, absolutely nothing else (and no other feature will be added to it).
4SEF works both on Joomla 3 and 4 and is in beta testing at the moment. It's part of the sh404SEF subscription, there's only one subscription for both and you can test it right now. Beta started 4 months ago and we're indeed in need of more feedback here, that's what's holding up the stable release
- 4SEO is an all-in-one SEO tools. It's not a replacement of sh404SEF as such, because it does much more than sh404SEF. We dropped the outdated features in sh404SEF and added the ones that matter today. It's a totally separate and independent subscription from 4SEF. It can import custom meta data and redirects from sh404SEF. You can look at the 4SEO product page and its full documentation for more details, including a full video tour.
In joomla 3 we use Jdiction for the translations. It is not compatible with Joomla 4. The disadvantage is that ids are the same for both Dutch and English. How do we solve that and does it not go wrong with migrating URLs?
I'm not familliar with JDiction, I assume it work(ed) somehow like Falang? What are you moving TO? Joomla native multilingual system?
I have no idea how JDiction URLs were produced with sh404SEF, we certainly did not have any specific support for JDiction.
You'll have to test that and see how the "Joomla content" URLs differ from the "JDiction" URLs and decide the next step then. It may be that the URLs are going to be quite similar actually.
I may not have understood your JDiction upgrade process so please provide more details if so.
Best regards
Yannick Gaultier
weeblr.com / @weeblr