Vba Delete Of Oleobject Resets Globals?

I'm developing a series of schedules that organize building plans. In one schedule I maintain a list of areas (called spaces, like a lobby or a conference room). I programatically maintain the list of spaces in the schedule for sorting and other external functions that are irrelevant. In the process I occasionally delete a worksheet. My worksheets have 4 buttons and a combobox. Whenever I delete a worksheet with these objects, I lose ALL of my module-level variables. These include two collections, a boolean, and an integer.

I'll post only the code for now. If you want to replicate, remember to place at least one button or combobox on your worksheet. You'll need to execute each sub manually. I have placed debug statements to print the globals to the immediate window. Notice that the 3rd debug statement shows the globals as present when it's called from the delete routine; however, if you manually execute that print routine after the delete, the globals are gone!

Option Explicit
Const SHEET_TARGET_RANGE As String = "C13:K36"
Dim m_objLocal As New Collection
Dim m_objMaster As New Collection
Dim m_bln As Boolean
Dim m_int As Integer
Public Sub Debug_Populate_Globals()
Dim intLoopCounter As Integer
Set m_objLocal = New Collection
Set m_objMaster = New Collection
For intLoopCounter = 1 To 8
m_objLocal.Add intLoopCounter, CStr(intLoopCounter)
m_objMaster.Add intLoopCounter, CStr(intLoopCounter)....................