add the hashed-next-key to the contact data, shown & stored

src/views/ImportDerivedAccountView.vue

@@ -72,6 +72,7 @@ import {
   DEFAULT_ROOT_DERIVATION_PATH,
   deriveAddress,
   newIdentifier,
+  nextDerivationPath,
 } from "../libs/crypto";
 import { accountsDB, db } from "@/db/index";
 import { MASTER_SETTINGS_KEY } from "@/db/tables/settings";
@@ -121,17 +122,7 @@ export default class ImportAccountView extends Vue {
       }
     });
     // increment the last number in that max derivation path
-    let lastStr = accountWithMaxDeriv.derivationPath.split("/").slice(-1)[0];
-    if (lastStr.endsWith("'")) {
-      lastStr = lastStr.slice(0, -1);
-    }
-    const lastNum = parseInt(lastStr, 10);
-    const newLastNum = lastNum + 1;
-    const newDerivPath = accountWithMaxDeriv.derivationPath
-      .split("/")
-      .slice(0, -1)
-      .concat([newLastNum.toString() + "'"])
-      .join("/");
+    const newDerivPath = nextDerivationPath(accountWithMaxDeriv.derivationPath);
 
     const mne: string = accountWithMaxDeriv.mnemonic;