Line graph not joining points

Hi Mesh ,

One sample for your reference, please check the following steps as below.

1. Insert an index by week in power query like this.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("Xc47EsAgCATQu1BbBNSYnMWxtMoBcv24foha6Mw+FIiR3pwfJkNcL0qmkZQkoEXYzoLgdhCZBWXbug/yqJd3TuXsElQCYjle5Rr7/N9u9MUADqvVgaLGx75nlb5o+gA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [week = _t, value1 = _t, value2 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"week", type text}, {"value1", Int64.Type}, {"value2", Int64.Type}}),
    #"Added Index" = Table.AddIndexColumn(#"Changed Type", "Index", 1, 1),
    #"Added Custom" = Table.AddColumn(#"Added Index", "Custom", each Text.Combine(List.RemoveNulls(List.Transform(Text.ToList([week]),each if Value.Is(Value.FromText(_), type number) then _ else null)))),
    #"Changed Type1" = Table.TransformColumnTypes(#"Added Custom",{{"Custom", Int64.Type}})
in
    #"Changed Type1"

2. Then apply the query and we can create measures as below.

sumvalue1 = SUM('Table'[value1])

value2sum = var minind = CALCULATE(MIN('Table'[Custom]),FILTER(ALLSELECTED('Table'),[sumvalue1] = BLANK()))
var ind = minind-1
return
CALCULATE(SUM('Table'[value2]),FILTER('Table','Table'[Custom]>=ind))