Enhanced files disappeared from the /enhance page before I could download them (premium)

Hello,
We're on the premium plan, had uploaded files that had been enhanced. We couldn't treat them right away (very much because of the lack of bulk download and the time needed to do it manually), and in the meanwhile, they've disapeared from the https://podcast.adobe.com/en/enhance page.

Is that normal, is there a maximum retention time ? I couldn't find any mention of it.
Tnx in advance for any info.

P.S. : +1 to add bulk download and bulk apply enhance settings