AECOsim. Trying to Change Level Line Weight in a Reference, colour and style works but not weight.

I am working in a drawing/the sheet view, using AECOsim and Projectwise. I navigate to the reference and desired level and can change the green to black, line style to dashed, but the line weight does not change, can anyone help? Everything is modelled "by level", and in most other sheets there are no problems.

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