"Active updating" doesn't work for different streams though it worked before

Problem/Motivation

"Active updating" worked well after forcedly changing the upload destination of a file field from public to private and vice versa. It no longer work after the following commit was made.

• https://www.drupal.org/commitlog/commit/6842/af39ebb7deac5e307e4b7a0f127...

The following issue is related with this commit.

• #2576547: FileField paths breaks Media Youtube video uri

The setting "Retroactive update" depends on "Active updating" and it will also be fixed when we fix "Active updating".

Some users consider that this function helps to switch the visibility of a file field:

• https://www.drupal.org/node/1806220#comment-6960906

Proposed resolution

I'd like to restore the support of the upload destination change. I believe the condition below to check if the "Active updating" should be applied for fields can be loosen.

if (in_array($source_scheme, array($temporary_scheme, $destination_scheme)) && !empty($wrappers[$destination_scheme])) {

Remaining tasks

• Make a patch
• Review the patch

User interface changes

None.

API changes

None.

Data model changes

None.

If this is not a bug, please feel free to change the category.