Multiselect Listbox On A User Form

I have a listbox control on a User Form. The properties are set as follows: MultiSelect: 1-fmMultiSelectMulti; ListStyle: 1-fmListStyleOption. With these properties the user selects multiple items from the listbox by clicking checkboxes that appear to the left of each option. Once items are selected the user clicks a command button on the User Form and the selected items are placed in a single cell on an excel worksheet. The excel worksheet contains an excel list of records. The records on the worksheet can be edited or added.

Let’s focus only on the MultiSelect listbox. A single item is selected from the listbox and is applied to cell G2 as CRUSHING. On the next record two options were selected. These items were added to cell G3 as CRUSHING; SHEAR. The next record had three items added to cell G4 as SHEAR; LATERAL BENDING; FLEXION. As you can see from the above example multiple items are added with the item name followed by a semicolon space and then the next item name. The user form contains command Buttons that allow the user to move to the NEXT, PREV, FIRST, LAST, ADD, and EDIT records.

Here is my problem:
I can check multiple items and have them added to a single cell of the current record on the worksheet. My problem is how to reverse this process. I need to move back to a previous record and have the User Form appear with the check boxes of the currently selected record.