I just updated from Strapi 3.5.2 to Strapi 3.6.2 and can’t find file formatComponentData.js
That file was situated in node_modules\strapi-plugin-content-manager\admin\src\utils
I used it file to rename displayed values of components in a specific way (in my custom components).
Now I don’t have that possibility 
Maybe this logic has been moved to another place?
Old file content looks like this:
// NOTE: this function is for adding a __temp_key__ key to each object of a repeatable component
// in order to have a unique identifier for the DnD
import { get } from "lodash";
import { getType, getOtherInfos } from "./getAttributeInfos";
const formatComponentData = (data, ct, composSchema) => {
const recursiveFormatData = (data, schema) => {
return Object.keys(data).reduce((acc, current) => {
const type = getType(schema, current);
const value = get(data, current);
const compoUid = getOtherInfos(schema, [current, "component"]);
const isRepeatable = getOtherInfos(schema, [current, "repeatable"]);
if (!value) {
acc[current] = value;
return acc;
}
if (type === "dynamiczone") {
acc[current] = value.map((componentValue) => {
const formattedData = recursiveFormatData(
componentValue,
composSchema[componentValue.__component]
);
return formattedData;
});
return acc;
}
if (type === "component") {
let formattedValue;
if (isRepeatable) {
formattedValue = value.map((obj, i) => {
const newObj = { ...obj, __temp_key__: i };
return recursiveFormatData(newObj, composSchema[compoUid]);
});
} else {
formattedValue = recursiveFormatData(value, composSchema[compoUid]);
}
acc[current] = formattedValue;
return acc;
}
acc[current] = value;
return acc;
}, {});
};
return recursiveFormatData(data, ct);
};
export default formatComponentData;