Well, exporting - importing sites is not the way to upgrade.
The proper way is to upload the upgrade package and install that.
The steps are by default:
- create backup
- remove obsolete modules / themes
- update modules to the latest version
- test if everything still works
- backup again
- upgrade
- test

Now, as you are on 9.1, it is not adviced to jump to 9.5
First stepping stone is 9.3.2
Two things about this one:
- there is a Newtonsoft issue if you have any DNNSharp modules. If you do, they have a Newtonsoft patch that you have to install prior to the upgrade
- 9.2 deprecated about 300 api's. If you have custom modules, you should test them really wel.

Cheers
Tycho

Posted By Nafigator on 22 Apr 2020 12:51 PM

I exported a DNN 9.1.1 site localized in 3 languages, and imported in into a new DNN 9.5 installation with the same language packs, modules and theme installed prior to import. However, the site comes up with ALL pages in ALL 3 languages listed in the menu as separate pages -- not as localized copies of English pages.  Any attempts to "localize content" produce a whole new set of pages to be translated from scratch. What am I doing wrong???

I have tried that once and it was a struggle. (in DNN 8)
IIRC , you must have all languages activated  on the target portal and also make sure you have the same one as the default portal and language and I think I had to run some sql after that to correct this.
But it can also be that there are bugs in DNN 9 that prevent you from succesfully doing this.
I don't think this has been tested a lot THB. (and thus there might be bugs when you do this with an ML site)

 

 

Thanks, Tycho - but I think you're missing the point... which is to MOVE the site from 9.1.1 installation to 9.5 without re-doing all the translated pages. I have all the (latest) modules and language packs installed on 9.5 - and everything works just fine... EXCEPT all the non-English translated pages are being imported along with English pages on the same level/language.  So - instead of 10 English pages, I have another 10 in Spanish and another 10 in Russian -- all listed in the menu! ...and when I try to turn on localization, it creates 10+10 new copies of English pages that need to be translated from scratch.