Question: Maple coeff ignoring terms with a bar above them (vinculum). How do I fix this?

I'm trying to extract coefficients from an expression that resulted from a matrix cross product operation. Maple inserts a bar above a number of variables (I'm assuming that this is a vinculum). When I use coeff it doesn't recognise the variables with a bar above them as the same as those without a bar above them.

 

Please help!
 

 

 

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Download Maple_Issue.mw

 

Sample code attached with the problem manifesting.

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