Question about PXDBLocalizableString override

I’m using the following version 2025 R2 and Build 25.200.0248. What I have to do is to override the character limit of a PXDBLocalizableString field from another DAC but I keep getting errors. Tried doing it the normal way as a DAC MergeMethod.Merge/Replace but I keep getting a Json de-serialization error. It does work, the DB column is set to the characters limit too but there is an error I’m getting when I try opening the Sales/Purchase Orders which error I think is coming from one of our customizations