onEdit checkbox then IMPORTRANGE - validation

Question

I'm trying to combine a onEdit script with an import range script, I tried using "if" to check if there's a single TRUE checkbox on the selected range but the import range part does not work only the checkbox part.
I need to import only after a single TRUE checkbox is enabled on column 7 otherwise the other spreadsheet glitches.
Source for the checkbox validation script: https://stackoverflow.com/a/71798583/18249133
function onEdit(e) {
const ss = SpreadsheetApp.getActiveSheet()
const { range: { columnStart, rowStart, rowEnd }, value } = e
if (value === "FALSE") return;
const checkRowStart = 4
const checkRowEnd = 200
const checkColumn = 7
if (columnStart === checkColumn && checkRowStart <= rowStart && checkRowEnd >= rowEnd) {
for (let i = 0; i < checkRowEnd; i++) {
ss.getRange(i + checkRowStart, checkColumn).setValue(false)
}
ss.getRange(rowStart, columnStart).setValue(true)
}
}
Import range script
function import(){
importRange(
"SPREADSHEET_ID",
"SHEET NAME + RANGE",
"SPREADSHEET_ID",
"SHEET NAME + RANGE",
);
};
function importRange(sourceID, sourceRange, destinationID, destinationRangeStart) {
const sourceSS = SpreadsheetApp.openById(sourceID);
const sourceRng = sourceSS.getRange(sourceRange);
const sourceVals = sourceRng.getValues();
const destinationSS = SpreadsheetApp.openById(destinationID);
const destStartRange = destinationSS.getRange(destinationRangeStart);
const destSheet = destinationSS.getSheetByName(destStartRange.getSheet().getName());
const destRange = destSheet.getRange(
destStartRange.getRow(),
destStartRange.getColumn(),
sourceVals.length,
sourceVals[0].length
);
destRange.setValues(sourceVals);
};
Thanks in advance :]