Thank you for contacting us.
You could refer to additional information about Save/Load Layout here. You could add Serialization tags to each RadDocking element to prevent loosing the applied style. If this doesn't help, handle ElementLoaded event and you can apply the style in the code behind.
If you still experience difficulties, please send us a sample project that reproduces the problem so we can investigate the issue.
I hope this helps. I will be glad to assist you further.
All the best,
the Telerik team
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