Editing Umaps via a text editor


I am wondering if it is possible to edit Umap’s via a text editor such as notepad++. I have done this in other engines in the past to resolve issues that the editor can’t seem to fix itself.

In this instance I have a landscape spline that I moved from a sub level into a persistent level, however the editor did something funky and I now have a normal landscape spline in the persistent level but also a broken one in the sub level that has all segments unconnected without any control points and which is impossible to delete, thereby stretching my level bounds.

Ideally I would like to manually delete the data in a text editor as the editor can’t, otherwise I will need to rollback my last revision and lose work.