Current FEA best practices and tested workflows, offer robust pre-processing tools for most of the simulations, in the automotive industry. It is still a time-consuming process though due to several bottlenecks that have been addressed and demand extra effort to overcome and get successful results. Simulating these models with IGA on the other hand, involves a lot of case studies from understanding the problem requirements to setting up the computational framework. This research explores methods that could be used to simulate FEA case studies from industrial applications in IGA framework, resulting into a robust switching from FEA to IGA. This transition from FEA to IGA emerges the development of new software tools, considerably challenging, not only for simple parameters like defining the material properties, specifying boundary conditions and loads, local refinement, but for more advanced simulation methods. Simulate parts manufactured by multi - stage metal forming operations, or parts with areas of varying thicknesses or vector field properties in general are some examples. IGA solid analysis has been brought to the attention of the CAE community recently, because of modern giga cast parts, that cannot be simulated with shell theory and the solution time increases dramatically for solid FE simulation. Simulating immersed IGA complex solids with explicit methodologies, is now possible using tetrahedral meshes for discretization, which gives great potential to engineers to work directly on geometries but on existing solids meshes as well, using ANSA pre-processor. Solid FEA – IGA migration case studies are being explored in the current research as well.