Backup of SQL tables and multi-member files

When we process files in our job streams we frequently create backups of
the input files by copying the file to a backup library/file with a new
member name incorporating the date.

These backup files are created initially by using CRTDUPOBJ or CPYF over
the production file.

Now we have begun creating SQL tables instead of PFs and we are running
into the issue that SQL tables cannot be multi-member. When you
CRTDUPOBJ or CPYF CRTF(*YES) from a table the resulting object is a
table.

So with this background, I am wondering what strategies people are using
for keeping backup copies of files when the base file is an SQL table?

Paul