It might be very difficult to get help on a weekend.
In addition a more descriptive thread title like "Files lost when transferring between Ideas and Draw" would attract the right folks to help you.
There's a dedicated forum on raw where you might meet more of them:
I have alerted a certain forum staff friend who would know whom to ask.
Presuming CC, there is this chat option on weekdays,
Creative Cloud support (all Creative Cloud customer service issues, chat open between 5AM and 7PM PST/PDT on workdays)and phone support here depending on country, where I am unsure about availability:
Moving this to the Draw forum to get help!
I tried a last time (again, after 4 times...), and what I made just after having restore my new Ipad from my last Icloud backup (with all my files of the old one), and before synchronizing my files with the Creative Cloud on Adobe Ideas, is to open up then close each file on Adobe Ideas... For having a new saving for each one. Because I realized that some thumbnails of my files were pixelated on Adobe Ideas after restored them from an Icloud backup! To open then to close each one file saved them in a cleaner version! And this have resolved my problem! Because after that, I synchronized all my files from Adobe Ideas on the Creative Cloud, and then from the Creative Cloud on Draw. And it worked! All my files were there! Incomprehensible! But it worked for me... Thanks for your reactivity and for your help!! If my solution can help someone else...