SFTP - Chunk Mode - Splitting files randomly

Hi,

Working on splitting a large input file (~1 GB) using SFTP Adapter (provided by Secure Connectivity add-on). Enabled EOIO & specified the chunk size. During run time, the very first chunk appears to be randomly chunked with premature end of tag. This is causing message mapping failure. Please suggest.

Something like this with missing </Item> end tag which is available in the source file and it is coming up in the second chunk:

  <Item>

            <ItemName>47626001103629</ItemName>

            <Description>test data</Description>

Thanks,

Sandeep B.