Excel vba variant array reusable, must be erased?

Question

I have a technical question:

My issue: I create a

Dim arrTemp as Variant 
Dim wbSource as workbook
Dim wbTarget as workbook

because I need to export multiple ranges from multiple worksheets (not fixed range) to another workbook. My code looks like:

' Worksheet 1
arrTemp = wbSource(1).Range("A1:B2").value
wbTarget(1).Range("A1:B2").value = arrTemp
If Not(IsArrayEmpty(arrTemp)) Then Erase arrTemp
' Worksheet 2
arrTemp = wbSource(2).Range("A1:B2").value
wbTarget(2).Range("A1:B2").value = arrTemp
If Not(IsArrayEmpty(arrTemp)) Then Erase arrTemp
' Worksheet 3
arrTemp = wbSource(3).Range("A1:B2").value
wbTarget(3).Range("A1:B2").value = arrTemp
If Not(IsArrayEmpty(arrTemp)) Then Erase arrTemp

(worksheet can be empty in the first place, that's why empty arr handler) (worksheets can contain int/str/double/... and the size is not that big to define specific arr type)

My question is: Does it make sense to erase the array every time? or It will be overwritten automatically?

I did a test to check the properties of the array (Lbound & UBound) before and after defining the array with a new range. I can see that It automatically Redim the array. Does it means that I only need to clear it in the end of the procedure?

Or it is a good practice to clear it in between?

Last but not least, do you see any problem in my code? Better way to perform this task?

Many thanks in advance!

Edit: Bear in mind The code is not correct for this task, no need to transfer to an array!

Answer 1

In Short (thanks to rory!):

No need to erase the array every time in between. Only before leaving the procedure.