Not sure of there is a pre-existing plugin that does exactly this. There's only one group migration plugin i have seen here which migrates contents and/or members from one group to another. However it should not be all that difficult to use the Elgg API calls to do more detailed export/import --> extract group discussions, perhaps ordered by unique group guid/title, all the details for group info, all discussion comments` details --> Actually - once all this *has been done, we will be able to practically choose *any format (xml,csv,txt,etc) we want, not just html ;-) Caveat = *some decent level of Php/Elgg-Know is obviously needed for coding..;-oO

@ Peter First of all make sure what changes have you made in your current installation, the best practice is not to ever modify the core.. If you have done it, The Upgrade process is going to be a tough job for you. But If you have only the Pluings and Themes Intalled.. .Then it is very easy instead.. Just install the new 1.7.x Elgg to new Domain and Copy your coustom Pluings there.. AND Enable the Plugins..

That's it and you are done...(Let me know if there are other issues... I'll Try to find answers :))

Thanks

Which core files did you modify?  you can save all the changes you made to views by copying the modified views into a plugin.

i.e. if you changed:

/views/default/
    view/one.php
    view/two.php

Copy those files into a plugin like so:

/mod/my_customizations/views/default/
    view/one.php
    view/two.php

You can do the same with any language files that you edited.

Thanks guys.

So, I have created a plugin so i am good to go for the upgrade. I have installed MAMP on my local server to test the migration.

I exported the database and installed MAMP. I have changed strings in the DB to point to the right site URL and dataroot. It seems like everything should be good to go.

I just can't login into the new instance on my local server. I ran the upgrade, I get the login page, I disabled all plugins.

I get the login page, put in my username and password and it just loops me back to the login page.

I even tried to create an account and that worked, but I can't login with that account either.

Any suggestions?