Conversion Correction Filing for Firms - allow correction of data from the conversion filing

**Is your feature request related to a problem? Please describe the problem & source of request.**
This ticket originated with OPS ticket 1966.

Corrections on conversion filings don't perform the same as corrections for other SP/GP filings. If you select to file a correction on a conversion you see the following screen, and as you can see you are unable to update any of the data fields. All you can do is leave a comment:


**Describe the solution you'd like - Expected Behaviour**
A correction filing on a conversion that allows correction of data rather than just leaving a comment.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context & Screenshots**
Add any other context or screenshots about the feature request here.