Roy
I've opened up the image and had a play with it. My question to you is what are you actually trying to achieve with the image.
It may sound a dumb question and reading all the posts I'm still none the wiser
Can you enlighten please >.< 

Hi Roy
I have not played around with it since I found the solution. You will find this happening a lot with text converting it to curves and then combining. The holes in some letters take on the parent fill and then you have to break them reverse the inner and then combine them again. The reason a lot of people do not have this problem is that most do not use the combine command but just fill the inner portions with white to make it appear to be empty.
I do a lot of logo work and find this happening quite often with text. There are a lot of little quirks and specialty things in Corel that can make your life so much easier when you take the time to find them. Have you ever tried to group or combine some items that one or more have things inside of them that makes it harder to select with just using a marquee select? If while selecting items with the marquee toll you hold down the alternate key, instead of having to surround an object to select it all you have to do is touch it and it becomes selected. Great when you have a lot of detail and need to select some of them. Give it a try!