Edit playlist's metadata in Pumukit doesn't update it in Youtube

[iriadp]

Steps:

• Create a new Youtube's playlist in Pumukit.
• Wait until the playlist has been created in Youtube. It depends on cron's time.
• Change the name of the playlist in Pumukit.
• Wait until the cron executes again.

Error:
The changes of playlist's metadata in Pumukit are not applied in Youtube.