I think most people have an archiving regimen in which mail and calendar items more than six months old get filed off from the outlook.pst into their archive.pst.

I would like merge all my calendar items from my archive.pst back into my outlook.pst, so I can have a complete historical calendar when I sync outlook to my iPhone.

This isn't the same as merging two outlook.pst files ... or is it?

See screenshot. Thanks.

2018-04-13_8-53-49.png