Replace date if x value with other column date else keep date

[Rune_]

I have a column (Lovet leveringsdato) where if no date has been input the default date is 01.01.1753. 

I want to replace all values containing 01.01.1753 with date from column (Levert dato), if other date then keep the date. 

I have tried with these formulas:

= Table.ReplaceValue(#"Egendefinert lagt til",each [Lovet leveringsdato], each if Date.From([Lovet Leveringsdato]) = #date(1753, 1, 1) then [Levert Dato] else [Lovet leveringsdato],Replacer.ReplaceValue,{"Lovet leveringsdato"})

and

= Table.ReplaceValue(#"Egendefinert lagt til",each Date.From([Lovet leveringsdato]), each if Date.From([Lovet Leveringsdato]) = #date(1753, 1, 1) then [Levert Dato] else [Lovet leveringsdato],Replacer.ReplaceValue,{"Lovet leveringsdato"})

Here are the columns

[Fowmy]

@Rune_ 

Right  click on 1st column,
Select Replace Value, ( Value to find =  "1.1.1753" and Replace with "1") click ok,
Select the Replace Step in power query steps pane and modify the code in the middle where it shows "1" to each [Levert dato]

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[Rune_]

@Fowmy 

This did not work. Probably because it is a date column. 

My formula work when I tired it on text column. I guess yours will also. 

[Fowmy]

@Rune_ 

You could try

Replacer.ReplaceValue if its Replacer.ReplaceText

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[Anonymous · Accepted solution]

Hi @Rune_ Why don't you try to add a conditional column like this.

Hope this helps.

Appreciate with kudos.

Please mark as a solution if this solves the problem.

Thanks