Cant delete previous feature name while starting new feature

[SHRUTHI PANNALA]

HI team,

I have one problem while starting new feature

Earlier I was trying to create a new feature from my development branch,my feature name Business Ammendments , i got error saying invalid feature name, then Later I wanted to change the feature name BusinessEntityAmmendment which is similar to previous name but without space, 

this time I could nor create a nfeature with new name , I can still see Previous feature name in preview 

Please find the below screen shot , underlined text hilights my previous feature name