Not collecting all data flows from 6509/6513

I am having a problem getting all the netflow data showing up, I am only getting some of the data.

I am not sure what I am missing, but when I transfer a large file, approx 1 gb I only capture about 100 mb of it.

Any help on this would be great.

Thanks

Here is some info hope this helps.

Version
Version 12.2(18)SXD6

Globally configured
mls flow ip full
mls flow ipx destination
mls nde sender version 5
mls sampling time-based 64

MLS NDE Config

Netflow Data Export enabled
Exporting flows to 10.144.X.X (9996)
Exporting flows from 10.144.X.X (50469)
Version: 5
Include Filter not configured
Exclude Filter not configured
Total Netflow Data Export Packets are:
7439 packets, 0 no packets, 43590 records
Total Netflow Data Export Send Errors:
IPWRITE_NO_FIB = 0
IPWRITE_ADJ_FAILED = 0
IPWRITE_PROCESS = 0
IPWRITE_ENQUEUE_FAILED = 0
IPWRITE_IPC_FAILED = 0
IPWRITE_OUTPUT_FAILED = 0
IPWRITE_MTU_FAILED = 0
IPWRITE_ENCAPFIX_FAILED = 0
Netflow Aggregation Disabled

IP FLOW Config

Flow export v5 is enabled for main cache
Exporting flows to 10.144.X.X (9996)
Exporting using source interface Loopback0
Version 5 flow records
320555 flows exported in 40137 udp datagrams
0 flows failed due to lack of export packet
0 export packets were sent up to process level
0 export packets were dropped due to no fib
0 export packets were dropped due to adjacency issues
0 export packets were dropped due to fragmentation failures
0 export packets were dropped due to encapsulation fixup failures
0 export packets were dropped enqueuing for the RP
0 export packets were dropped due to IPC rate limiting

All interface have I am monitoring have the folloing enabled
ip route-cache flow
mls netflow sampling