I have run the command
Export-SPWeb -Identity $url -ItemUrl $largeList -CompressionSize 15 -Path "c:\itemFolder\backup.cmp"
This results in 3 files.
c:\itemFolder\backup.cmp c:\itemFolder\backup1.cmp c:\itemFolder\backup2.cmp
Now when I try to Import these files the second two fail. Error message: "Import-SPWeb : Failed to read package"
Log file has another error message :
The file operation of c:\itemFolder\backup1.cmp was preformed out of order. The file was operated on as order 1 but was marked as order 0. Please ensure these files are operated on sequentially starting from 0
I do import-spweb once per file, in order. Why is happening?