Hi,
unfortunately, there was a bug in 5.5 version related to alternative forms. I am sorry for inconvenience.
Could you please apply the latest
hotfix for 5.5 version?
P.S. The bug was fixed in hotfix 5.5.20:
- Alternative forms - modifications of alternative forms after new fields were added to a base form affected form definition in special cases.
Best regards,
Ivana Tomanickova