Date Issues in Visuals

ArchStanton - Have you tried using an inactive relationship between "Resolution Date" and then creating a special measure for this visual that leverages USERELATIONSHIP( ) to activate the relationship?

Here's some guidance on the use of this DAX function: https://dax.guide/userelationship/

If this doesnt work, it could also be more simple, and to do with the fact you're using a fiscal / financial month ordering with a calendar year. An additional column in your calendar that presents the fiscal / financial year could resolve this. 

Here is an example of some M Code I use to create a fiscal / financial year column

InsertFYStart = Table.AddColumn(InsertWeekOfYear, "FYStart", each if [Month Number] <= 3 then Date.FromText(Number.ToText(Date.Year([Date])-1) & "-04-01") else Date.FromText(Number.ToText(Date.Year([Date])) & "-04-01"),type date),
InsertFinancialYear = Table.AddColumn(InsertFYStart, "FinancialYear", each Number.ToText(Date.Year([FYStart]))&"/"& Text.End(Text.From(Date.Year([FYStart]) +1), 2)),

If this helps guide you towards a fix, please accept as the solution, which will help others with the same challenge. 

ArchStanton - For this I would enable the preview features show below:

And then edit your measures as one using VS Code - there's some great guidance on getting started with that in this video: https://www.youtube.com/watch?v=TPASF4HlEOA