Trying to cancel Onboarding Processes using TCC

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I did an export to pull out the Process ID's and filterd them down to just the ones that were not "Complete" or already "Canceled".  I setup and import  Operation "cancel-process" using my .csv file containing the Process ID's as the source.  I must be missing something...every time I run it, I get an error

If I use the Number field (OBID) as a key field..it errors on the POLL saying it can't find it.  If I use it as a lookup, it tells me I cannot update that field.

Shouldn't I just use the ID...as a lookup? That's it...the process Operation should be cancel, right??  ugghhh this thing is NEVER straight forward.