How to send BUG to corel or export to TIFF file with compression

I'm writeing some macro for Corel Draw X5 and I have found BUG with exporting graphics to TIF file.

This is part of my code:

Sub Macro1024()
    Dim expflt As ExportFilter
    Set expflt = ActiveDocument.ExportBitmap("C:\someFile.tif", cdrTIFF, cdrSelection, cdrRGBColorImage, , , 72, 72, cdrNormalAntiAliasing, False, False, True, False, cdrCompressionLZW)
    expflt.Finish
End Sub

I was using: ExportBitmap, Export, ExportEx and ActiveShape.ConvertToBitmap and then after selecting shape again ActiveShape.Bitmap.SaveAs. There always is problem with no compression in TIF file.

I know that I can convert file using for example: EMF and then using VisualStudio 2005 convert this file to TIF. But this is expensive way and I'm not sure that my client will want to pay for it.

Macro work well in Corel X3 and X4 in X5 there is always no compression, no matters what I do. Can I somehow send bug to Corel Support? I'm using trial version of Corel Draw X5 and I don't have PIN number to it. But I have PIN number to Corel Draw X3 will it be problem if I try to contact support and say that I don't want to talk about X3?