I am trying to import our Constant Contact campaigns.  I managed to import the Campaigns but I don't seem to be able to do the same for the Campaign Members. According to the migrate import I have 4 fields

Campaign Id, Lead Id,Contact Id,Status

I use the CRM API (JSon) to get the info of our first campaign. I would assume that Campaign Id is the CAMPAIGNID field

{"content":"1777807000000394159","val":"CAMPAIGNID"}
{"content":"1777807000000098015","val":"SMOWNERID"}
{"content":"xxx xxx","val":"Campaign Owner"},
{"content":"Email","val":"Type"}
{"content":"Copy of Website Promotion Feb 2010 Allyson","val":"Campaign Name"}

leading to this csv (I got the Lead Id same as above)

Campaign Id, Lead Id,Contact Id,Status
1777807000000394159,1777807000000245758,1777807000000098015,OPENED

importing it gets me this error

Added 0 Updated 0 Skipped 1 Export 

Row Number : 2
Campaign Id : 1777807000000394159 
Lead Id : 1777807000000098015 
Contact Id : 1777807000000245758 
Status : OPENED 
Errors : Could not find a matching parent record for this look up field - Campaign Id 

Why would the import complain about a bad ID if that same id is given to me by the API ?