VBA changes part numbers when copying

I have a list of part numbers and two of them give me trouble when copying using vba.

The part numbers:
6000-18-1
6000-18-2

get converted to
8/1/6000
8/2/6000

when using the code below to copy parts from ws1 to ws2

Worksheets("ws1").Activate
Range(Cells(2, 1), Cells(LastRow, 1)).Copy
 
Worksheets("ws2").Activate
Range(Cells(2, 1), Cells(LastRow, 1)).PasteSpecial paste:=xlPasteValues, Operation:=xlNone, SkipBlanks:=False, Transpose:=False


I tried to format column 1 in ws2 as text (Range("A1").EntireColumn.NumberFormat = "@") before doing the paste but that gives me an error.

Help please..
EdLBAsked:
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David Johnson, CD, MVPOwnerCommented:

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EdLBAuthor Commented:
Thanks David. That's pretty simple. Not sure why the PasteSpecial comand I was using changed the number format. The following worked successfully:
 
      Worksheets.("ws1"). Range(Cells(2, 1), Cells(EndRow, 1)).Copy
      Worksheets("ws2").Activate
      Range("A2").Select
      ActiveSheet.paste
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