Excel VBA PasteSpecial not pasting consistently - excel

Question

I have a report which is used to import data relating to jobplans and then creates graphs and stats based on the data. Calculations and graphs are based on tables and the tables are populated by VBA - user selects the file and then VBA checks it matches the expected file format and put everything in the right place.
HOWEVER, the pastespecial part of the code does not paste everything correctly. Specifically there are a number of columns with datevalues and when pasted some of them (not one column or particular rows but seemingly random cells) are not formatted as dates when pasted and therefore are not captured in formulas when I look for job within particular timeframes.
In the source file the all data is 100% saved as a datevalue (if I put a filter on the data, it is all grouped by year and can be expanded to month/day/time + if I use a test cell to do add 1 to the cells that the next date is shown). Once pasted into target sheet then some is still a datevalue but some appears to be text and showing as dd/mm/yyyy hh:mm but being missed from calculation. On these cells if I go onto them press F2 and then Enter then the cell changes to a datevalue (realigns to the right and then gets included in daterange formulas).
Here is the code:
Public Sub importdata()
Dim wb1, wb3 As Workbook
Dim ws1, ws3 As Worksheet
Dim lrow As Long
Dim WOtable As ListObject
Dim searchcell As Range
Set wb1 = ThisWorkbook
Set ws1 = wb1.Sheets("Dashboard")
Set WOtable = ws1.ListObjects("workorder")
WOfile = Application.GetOpenFilename(FileFilter:="Excel Files (*.CSV),*.CSV", Title:="Select Workorder Extract To Be Opened",MultiSelect:=False)
If WOfile = False Then Exit Sub
Set wb3 = Workbooks.Open(WOfile)
Set ws3 = wb3.Sheets(1)
ws3.Range("M:M, O:O, Q:Q").EntireColumn.Delete
If ws3.Range("A1").Value = "jobnumber" And ws3.Range("B1").Value ="jobdesc" And etc etc Then
lrow = ws3.Range("A1").End(xlDown).Row
ws3.Range("A2:O" & lrow).Copy
WOtable.DataBodyRange(1, 1).PasteSpecial Paste:=xlPasteValuesAndNumberFormats, Operation:=xlNone, SkipBlanks:=False, Transpose:=False
Application.CutCopyMode = False
Else: MsgBox ("File selected to import workorder information was not in expected format, please check the file and retry.")
End If
wb3.Close False
End Sub
I have tried to add the following line before copying to force it based on something I saw on google but to no avail:
ws3.Columns("E:K").NumberFormat = "DD/MM/YYYY HH:MM:SS"
Thanks for any help

Answer 1

As discussed in comments, an example usage of pushing the data into a variant array and then pasting it to the destination. A few comments:
Always state what type you want for each variable, comma separated variables on the same line don't all take the last type.
Use with statements to keep code slightly cleaner and reduce the amount of references excel needs to resolve.
As you didn't clear the contents of the table (merely overwrote them) I replicated this behaviour in the code as I assume it is intended.
Edited sub:
Public Sub importdata()
Dim wb1 As Workbook, wb3 As Workbook
Dim ws1 As Worksheet, ws3 As Worksheet
Dim WOtable As ListObject
Dim varTMP As Variant
Set wb1 = ThisWorkbook
Set ws1 = wb1.Sheets("Dashboard")
Set WOtable = ws1.ListObjects("workorder")
WOfile = Application.GetOpenFilename(FileFilter:="Excel Files (*.CSV),*.CSV", Title:="Select Workorder Extract To Be Opened", MultiSelect:=False)
If WOfile = False Then Exit Sub
Set wb3 = Workbooks.Open(WOfile)
Set ws3 = wb3.Sheets(1)
With ws3
.Range("M:M, O:O, Q:Q").EntireColumn.Delete
If .Range("A1").Value = "jobnumber" And .Range("B1").Value ="jobdesc" And etc etc Then
'load data into variant array
varTMP = .Cells(1, 1).CurrentRegion
'If you want to do any data manipulation on the array, do it here
'Paste array
End With
With WOtable.DataBodyRange
Range(.Cells(1, 1), .Cells(0 + UBound(varTMP, 1), 0 + UBound(varTMP, 2))) = varTMP
End With
Else
MsgBox ("File selected to import workorder information was not in expected format, please check the file and retry.")
End If
wb3.Close False
End Sub