Converting sorting file only results in error

[rly]

Describe the issue

A user has a PLX file with an initial sorting stored in the file. In a workflow for converting a single session, on the File Metadata screen, after adding sex and subject and pressing Next, they get the error:

Uncaught (in promise) Error: Form is not allowed to have the additional property "UnitColumns".
    at JSONSchemaForm.throw (index-54b303b5.js:148308:11)
    at JSONSchemaForm.validate (index-54b303b5.js:148382:19)
    at async JSONSchemaForm.validate (index-54b303b5.js:148355:9)
    at async GuidedFooter.onNext [as __onNext] (index-54b303b5.js:153624:9)

The same error happens when converting just Phy sorting data, so this seems to be a broader issue.

I can reproduce this on NWB GUIDE 1.0.5 and on the main branch.

Steps to Reproduce

See above.

Operating System

Mac M1

GUIDE Version

1.0.5

Code of Conduct

Yes

Did you confirm this issue was not already reported?

Yes

[rly]

This is a duplicate of #909

[rly]

I am reopening this issue and updating the OP to reflect the broader problem that a conversion with only Phy data fails with the same error, so this seems to be broader.