Attachment file name conflict

Zoho recruit used to rename the attachment file into a unique name for each candidate that is shown in the exported XLS file which solved a lot of sorting problems.

Now when I export a list of candidates to an XLS sheet as well as a compressed file containing attached files the renaming feature is not working which causes loss of attachments.

For example, If 10 out of 100 candidates uploaded their resumes with a file named "CV.pdf" I get 10 different "CV.pdf" files in the exported compressed zip file but when I extract it to a folder or something I only get 1 "CV.pdf" and I lose the other 9 files with the same name but different content because there can't be two files or more with the same exact name in any single location.

Please advise me in how to overcome this problem or fix the renaming feature