Multiple relationships between two entities

I have an unusual situation where I have 4 relationships between ORGANISATION and SITE, which are Main Contractor; Architect; Electrician and RVI. The first 2 relationships behave as aspected, but the 3rd and 4th move down another relationship when I try and link it in a screen. I believe I've set up all relationships with the same properties. Any ideas? Rgds Jim Farrow
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