'Unsafe type' message in D7

From: Andrew Diabo (aadiabo_at_ix.netcom.com)
Date: 01/29/05 

Date: Sat, 29 Jan 2005 03:11:41 -0500

I am just starting to convert some of my D6 applications to D7
and I seem to get a lot of these 'Unsafe type' compile messages.
For example Unsafe type 'TBookMark'. Is this safe to ignore
or is there something I should be worried about?

Thanks in advance for any help.

Andrew