You may find the object you created saved the morph in two groups, one for the base and one for the text.
So when you convert it back to a morph, you will actually have two morphs.
The cut you were performing was only cutting the original box and not the text morph.
See if you can select just the and delete it.
If selecting the text also selects the box, disable grouping and then see if you can select just the text and delete it.
Barry.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10