Hi,
I followed these instructions to upgrade form ACF 4 to 5:
http://www.advancedcustomfields.com/resources/upgrading-v4-v5/
After doing this I noticed that my custom fields were not grouped by language.
WPML Translation options before upgrade: http://i.imgur.com/zvayqAL.png
After upgrade: http://i.imgur.com/b7twKrT.png
So it looks like this is something that needs to be considered in the upgrade db script.
Hi @bjornbjorn,
Thanks for the post.
This issue is now resolved, all these shortcomings are now fixed in the version 4.x.x db upgrade script.
It is also possible to export your WPML settings by saving your WPML tables with prefix ‘wp_icl’, Additionally WPML stores its settings in wp_options table, so you also move the wp_options table too.