>Hi Hilmar! Thanks for your reply.
>You don't understand my question. The question is:
>using a zero records .cdx file, copied over a "n" records .cdx file, with the same header structure, reindexing command after, I will get the same result's that the INDEX command to rebuild all the .cdx file?
>Thanks again.

Yes, you will. Reindexing will remove any bloat caused by the original COPY. The empty .CDX file may save some time, but it may also be overkill.
On the other hand, you likely would get best performance (speed) doing the COPY without a .CDX and then doing INDEX commands to build the index.