DS-160 Create new application using retrieve or upload

[obelix]

I'm trying to create new application using old application IDs for B1/B2 renewals. These IDs are 10yr old. But, it gives me error with "ID not found".

CEAC page used to have "upload" feature where one can upload .dat file. But, I don't see that link anymore. Either it's "new application" or "retrieve application".

I know that I can always create (and, submit as well) new application as many times I want. But, I've 4 apps to renew for my parents (+in-laws). I had saved all the details and including .dat files from 10yrs ago. The last thing I want to do is just type 4 applications from scratch.

So, I'd appreciate if anyone can some share some tips here based on experience.

- Is there any other way to create new application using either the .dat file or even the saved PDF for all DS-160 pages.
- Any other tricks that may work using the old application ID. I've this old app ID to create new form many times for my own H1B renewals ages ago. Never failed me. Even DoS FAQ still suggests that anything created 2010 can be re-used.
- Any other thoughts.

DoS has removed public phone numbers for such inquiries so can't call them either. So, I'm just looking a workaround.

Thanks in advance.