When calling mailchimp_get_interest_categories(), and setting the 2nd argument exclude_hidden = TRUE, it is not populating hidden groups and interest.
Looking deeper into the code, I noticed that it is only checking the interests for hidden fields, but not the parent group. In other words, if the parent group is hidden, it skips the group and will never process the interests.
The fix is to check for the hidden field in the group as follows:
foreach ($interests_groups->categories as $interest_category) {
// check if we should exclude hidden categories
if ( isset ($interest_category->type) && $interest_category->type == 'hidden' &&
isset($exclude_hidden) && $exclude_hidden == TRUE ) {
continue;
}
My guess is that this may be related with several other reported bugs concerning groups and interests not appearing.
Closed: won't fix
5.6
General
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