[Discuss-gnuradio] Tag Propagation Question

If I set_tag_propagation policy(TPP_DONT) and then re-add all tags in range to the output, but only produce a portion of the input items to output, what effect does this have?

Here is a good corner case example of what I mean:

Suppose I'm given 10 items, and every item has a tag associated with it. I then make the following actions

set_tag_propagation policy(TPP_DONT)

for( ii = 0; ii < 9; ii++)
{
    add_item_tag(0, tags[ii].offset, tags[ii].key, tags[ii].value, tags[ii].srcid);
}

consume_each(5);

return 5;

I'm concerned this might cause tags to be added or lost.

Thanks,

Rich