🐛 Bug report | Merged objects lose parameters and references

[stevenlabelle]

Description:
Some parameters and references are lost when 2 objects are merged.

• Named selections disappear
• Shell data is erased
• The boundary condition selection references do not update (e.g., it will reference an object Object01 even after it has been merged with Object02 into MergedObject01).

Version:
Dev Version 3.0.0.23e43365b

Steps To Reproduce:

1. Open a model with 2 objects that have named selections (from nodesets, elems, etc.)
2. Merge the objects.