>I think what is happening is that after appending the blank record, my REPLACE commands are actually modifying another record, not the blank one. Then, subsequent APPENDs find the blank record, thus the duplicate index.
>
>It has been my assumption that after I issue the APPEND BLANK IN csrProjSessions, the record pointer in csrProjSessions will be pointing to the blank record I have just added. Is that a bad assumption?

No, it's correct assumption unless some code moves record pointer between APPEND and REPLACE.