Grid/Store sync for Add/Remove

I'm new to ExtJS and this is my first exercise.

I have a REST based model/store that works great. The store is linked to a grid where I can select a row and update it from an external form. However, when I create or delete a record in the store, the grid is not updated. The model/store is working with the REST service on all CRUD operations.

Any ideas?

I can share code if necessary.

Using ExtJS 5.1

Grid/Store sync for Add/Remove