How to merge several cells using VBA - excel

Question

I have some problems with excel and VBA, in that don't know have much knowledge. I copied text from pdf and it's awful.
I have cells which contain some text.
The problem is that the text from one paragraph is broken down over several cells. At the beginning of each paragraph is a word in bold (e.g. CLR.) which describes the rest of the text. As such, it defines where each paragraph should start. How I can merge these cells into one?
I see
I want

Answer 1

Sub MergeText()
Dim strMerged$, r&, j&, i&
r = 1
Do While True
If Cells(r, 1).Characters(1, 1).Font.Bold Then
strMerged = "": strMerged = Cells(r, 1)
r = r + 1
While (Not Cells(r, 1).Characters(1).Font.Bold) And Len(Cells(r, 1)) > 0
strMerged = strMerged & Cells(r, 1)
r = r + 1
Wend
i = i + 1: Cells(i, 2) = strMerged
Cells(i, 2).Characters(1, InStr(1, strMerged, ".", vbTextCompare)).Font.Bold = True
Else
Exit Do
End If
Loop
End Sub

Answer 2

Modify (if needed) and try:
Option Explicit
Sub test()
Dim LastRow As Long, i As Long, j As Long, Count As Long
Dim str As String
With ThisWorkbook.Worksheets("Sheet1") 'Change sheet name if needed
LastRow = .Cells(.Rows.Count, "A").End(xlUp).Row
For i = LastRow To 2 Step -1
If (UCase(Left(.Range("A" & i), 1)) <> Left(.Range("A" & i), 1)) And UCase(Left(.Range("A" & i - 1), 1)) = Left(.Range("A" & i - 1), 1) Then
Count = 0
For j = 1 To Len(.Range("A" & i - 1))
If .Range("A1").Characters(j, 1).Font.FontStyle = "Bold" Then
Count = Count + 1
Else
Exit For
End If
Next j
str = .Range("A" & i - 1).Value & " " & .Range("A" & i).Value
With .Range("A" & i - 1)
.Value = str
.Font.Bold = False
With .Characters(Start:=1, Length:=Count).Font
.FontStyle = "Bold"
End With
End With
.Rows(i).EntireRow.Delete
ElseIf (UCase(Left(.Range("A" & i), 1)) <> Left(.Range("A" & i), 1)) And UCase(Left(.Range("A" & i - 1), 1)) <> Left(.Range("A" & i - 1), 1) Then
str = .Range("A" & i - 1).Value & " " & .Range("A" & i).Value
With .Range("A" & i - 1)
.Value = str
.Font.Bold = False
End With
.Rows(i).EntireRow.Delete
End If
Next i
End With
End Sub