A meter input problem

In a section in 2/4 I wanted to lengthen a bar so I deleted the 2/4 and inserted a 3/4 meter signature but still only had 2 beats. So I added a bar and input 3/4 for that one but still only had 2 beats. Shouldn’t adding a new meter signature override what’s currently there?

Got it to work by just repeating the process several times.