Never seen any restrictions like those.
The IMC rating removes the restriction on flight in Class D and E airspace in conditions where compliance with IFR is required. It also removes the restrictions on flight in less than 3km viz, or out of sight of the surface. And that's about all. Additionally, there are recommended minima for approaches, but these are only recommended.
Full details are in
LASORS, Section A, Appendix F, on page 66.
FFF
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