Object changed date different in 7.2 -or- 7.3

All,

Last weekend we went live from our onsite System i 520 at 7.1 to a cloud
partition at 7.3.

I have an application that sends files to a website on a nightly basis, but
only if the file has changed.

To determine whether the file had changed I was using RTVOBJD and using the
CHGDATE parm. On 7.1 this worked. On 7.3 this does not work. For
example, our item master has thousands of record changes every day, but the
RTVOBJD CHGDATE parm says the last change was last Saturday, when the file
was restored. To fix it, I changed to RTVMBRD and all is well with the app.

However, I didn't remember anything in either the 7.2 or 7.3 MTU about a
change like this. Looked at them again this morning and did not find
anything on this.

Anyone know anything on this?

Thanks.