John,

I'm not sure if PACK causes a CDX rebuild. Up until the DBC got involved the common practice was DELETE TAG ALL and then issue each INDEX command to reconstruct the CDX file. REINDEX was generally avoided because it can not recover in all cases of CDX corruption.

>Maybe I'm getting senile, but wasn't it a problem several versions ago that only PACK recovered space in the CDX?
>
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>>>Is reindex command enough or should tags be removed?
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>>I did some testing and REINDEX does recover wasted space in the CDX.