DataTables - How to exclude variables from being stored?

I’m storing a ‘LastStartTime’, however the DataTable is saving that variable and I don’t want it to. It’s currently not a UPROPERTY() but saves regardless, I’ve tried marking it as a UPROPERTY and also with Transient parameter, but nothing seems to stop it saving the value.

For now I can call an initialize function when the struct is constructed, but I’d rather know the proper way of preventing this.

Here is a trimmed version of my struct with the relevant code.

struct FMeshFX : public FTableRowBase

	FMeshFX(FName InName, bool InLooping, float InCooldown, TArray<UStaticMesh*> InMeshes, TArray<int32> InFrames)
		: Name(InName)
		, Cooldown(InCooldown)
		, CurrentCooldown(Cooldown)
		, Variation(0.f)
		, LastStartTime(0.f)

		: Name(NAME_None)
		, Cooldown(0.f)
		, CurrentCooldown(0.f)
		, Variation(0.f)
		, LastStartTime(0.f)

	bool CanDoNextLoop(float CurrentTime) const
		return CurrentTime >= LastStartTime + CurrentCooldown;

	FName Name;
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Effect)
	float Cooldown;
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Effect)
	float Variation;
	float CurrentCooldown;

	float LastStartTime;