Thank you for reporting this problem.
I logged it for investigation in our PITS system. Here you can find the PITS Issue: Public URL
The information below could be also useful for your scenario:
RadEditor uses two different free libraries to provide Import to
RTF and Export to RTF
The first one used to provide RFT to HTML
importation is available in this CodeProject's article: http://www.codeproject.com/KB/recipes/RtfConverter.aspx
The library used for HTML to RTF
exportation is available here http://www.codeproject.com/KB/recipes/RtfConverter.aspx
As you can see both libraries are written by different developers and they are not fully compatible with each other.
For your convenience I prepared a list of know limitations of the Import and Export features of both libraries:
RFT to HTML (Import)
- supported. I was able to export bold formatting from the provided by you Bold.rtf file.
underline - supported
foreground and background colors - supported
table elements - unsupported
indentations - unsupported
HTML to RTF (export)
underline - unsupported
foreground and background colors - unsupported
table elements - partially supported - table borders are not exported
indentations - supported
font family and size - unsupported
The unsupported scenarios are hard for development and require more time for implementations and testing. Our development is concentrated currently on producing valid XHTML content and the import and export problems are logged with medium priority in our ToDo list. That is why we could not provide firm estimate for when the unsupported features will be available.
Please note that good RTF import and export tools are very expensive. If you are currently unsatisfied with the offered by RadEditor RTF functionality, you could search in Internet for another free or paid RTF to HTML importation and HTML to RTF exportation tools and we will help you to integrate them with RadEditor.
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