Parameters in Report Builder (DAX query copied from Performance Analyzer)

You have deleted much more than just the TOPN function making the query invalid. I've highlighted in red below what should be deleted in order to remove just the TOPN restriction. 

// DAX Query
DEFINE
VAR __DS0Core =
SELECTCOLUMNS(
KEEPFILTERS(
FILTER(
KEEPFILTERS(
SUMMARIZECOLUMNS(
'Query1'[Invoice_Complete],
'Query1'[Invoiced_Quantity],
'Query1'[Staples_order_no],
'Query1'[Staples_return_order_no],
'Query1'[return_status_description],
'Query1'[customer_name],
'Query1'[External_Document_No],
'Query1'[Our_Item_No],
'Query1'[EXTERNAL_ITEM_NO],
'Query1'[Return_Node],
'Query1'[Create_date],
'Query1'[return_create_date],
'Query1'[return_date_plus18days],
'Query1'[Open_days],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Year],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Quarter],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[QuarterNo],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Month],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[MonthNo],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Day],
"CountRowsQuery1", CALCULATE(COUNTROWS('Query1'))
)
),
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
OR(
NOT(ISBLANK('Query1'[Invoice_Complete])),
NOT(ISBLANK('Query1'[Invoiced_Quantity]))
),
NOT(ISBLANK('Query1'[Staples_order_no]))
),
NOT(ISBLANK('Query1'[Staples_return_order_no]))
),
NOT(ISBLANK('Query1'[return_status_description]))
),
NOT(ISBLANK('Query1'[customer_name]))
),
NOT(ISBLANK('Query1'[External_Document_No]))
),
NOT(ISBLANK('Query1'[Our_Item_No]))

),
NOT(ISBLANK('Query1'[EXTERNAL_ITEM_NO]))
),
NOT(ISBLANK('Query1'[Return_Node]))
),
NOT(ISBLANK('Query1'[Create_date]))
),
NOT(ISBLANK('Query1'[return_create_date]))
),
NOT(ISBLANK('Query1'[return_date_plus18days]))
),
NOT(ISBLANK('Query1'[Open_days]))
),
NOT(ISBLANK('LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Year]))
),
NOT(ISBLANK('LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Quarter]))
),
NOT(ISBLANK('LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[QuarterNo]))
),
NOT(ISBLANK('LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Month]))
),
NOT(ISBLANK('LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[MonthNo]))
),
NOT(ISBLANK('LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Day]))
)
)
),
"'Query1'[Invoice_Complete]", 'Query1'[Invoice_Complete],
"'Query1'[Invoiced_Quantity]", 'Query1'[Invoiced_Quantity],
"'Query1'[Staples_order_no]", 'Query1'[Staples_order_no],
"'Query1'[Staples_return_order_no]", 'Query1'[Staples_return_order_no],
"'Query1'[return_status_description]", 'Query1'[return_status_description],
"'Query1'[customer_name]", 'Query1'[customer_name],
"'Query1'[External_Document_No]", 'Query1'[External_Document_No],
"'Query1'[Our_Item_No]", 'Query1'[Our_Item_No],
"'Query1'[EXTERNAL_ITEM_NO]", 'Query1'[EXTERNAL_ITEM_NO],
"'Query1'[Return_Node]", 'Query1'[Return_Node],
"'Query1'[Create_date]", 'Query1'[Create_date],
"'Query1'[return_create_date]", 'Query1'[return_create_date],
"'Query1'[return_date_plus18days]", 'Query1'[return_date_plus18days],
"'Query1'[Open_days]", 'Query1'[Open_days],
"'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Year]", 'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Year],
"'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Quarter]", 'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Quarter],
"'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[QuarterNo]", 'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[QuarterNo],
"'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Month]", 'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Month],
"'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[MonthNo]", 'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[MonthNo],
"'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Day]", 'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Day]
)

VAR __DS0PrimaryWindowed =
TOPN(
501,
__DS0Core

,
'Query1'[External_Document_No],
1,
'Query1'[Invoice_Complete],
1,
'Query1'[Invoiced_Quantity],
1,
'Query1'[Staples_order_no],
1,
'Query1'[Staples_return_order_no],
1,
'Query1'[return_status_description],
1,
'Query1'[customer_name],
1,
'Query1'[Our_Item_No],
1,
'Query1'[EXTERNAL_ITEM_NO],
1,
'Query1'[Return_Node],
1,
'Query1'[Create_date],
1,
'Query1'[return_create_date],
1,
'Query1'[return_date_plus18days],
1,
'Query1'[Open_days],
1,
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Year],
1,
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[QuarterNo],
1,
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Quarter],
1,
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[MonthNo],
1,
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Month],
1,
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Day],
1
)

EVALUATE
__DS0PrimaryWindowed

ORDER BY
'Query1'[External_Document_No],
'Query1'[Invoice_Complete],
'Query1'[Invoiced_Quantity],
'Query1'[Staples_order_no],
'Query1'[Staples_return_order_no],
'Query1'[return_status_description],
'Query1'[customer_name],
'Query1'[Our_Item_No],
'Query1'[EXTERNAL_ITEM_NO],
'Query1'[Return_Node],
'Query1'[Create_date],
'Query1'[return_create_date],
'Query1'[return_date_plus18days],
'Query1'[Open_days],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Year],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[QuarterNo],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Quarter],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[MonthNo],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Month],
'LocalDateTable_fd4ab7aa-4e0a-4c2f-baeb-1a0197162a03'[Day]