Body and Teaser appears together

I am pretty much new to the Drupal. I have been working on my sample website to make the Workflow and Node Moderation module work together. They are working pretty much perfect. But suddenly, not sure after installing which module, I have been facing the following problem:
" When I create a new node without revision, everything works well. As soon as, I edit the node and both the boxes, 'Create a New Revision' and 'New Revision for Moderation', are ticked and I press 'save'. After publishing the pending revision, if I go to 'edit', I can
see in the 'Body' field that teaser and actual body are getting showed up. Now, I disabled the teaser by setting its length to 'unlimited' and
also deleted all the data in 'teaser' column of the 'node_revisions' table. After doing so I don't get teasers, but I need to have teaser as some part of my website use 'story' type and need teaser for them."

I have TinyMCE and Views modules installed as well. I tried going through the code of node.module but no luck.

If anyone can suggest me the way to either restrict teasers getting generated for node type or a way to remove teaser part from
the 'body' field without disabling the teasers, then that would be great.

I appreciate your effort and time.

Let me know if more details are required.

Thanks.

Cheers!!!